Concrete repair

September/October 2017 Vol. 30, No. 5

A B i m o n t h l y P u b l i c a t i o n o f t h e I n t e r n a t i o n a l C o n c r e t e R e p a i r I n s t i t u t e

BRIDGES BRIDGE S& HIGHWAYS STATE OF THE INSTITUTE

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September/October 2017 Vol. 30, No. 5

Concrete Repair Bulletin is published bimonthly by: International Concrete Repair Institute, Inc. 1000 Westgate Drive, Suite 252 St. Paul, MN 55114 www.icri.org For information about this publication or about membership in ICRI, write to the above address, phone (651) 366-6095, fax (651) 290-2266, or email [email protected]. The opinions expressed in Concrete Repair Bulletin articles articles are those of the authors and do not necessarily represent the position of the editors or of the International Concrete Repair Institute, Inc. Copyright © 2017 International Concrete Repair Institute, Inc. (ICRI). All rights reserved. Editor Jerry Phenney Executive Director Mike Levin Associate Executive Director Gigi Jaber Technical Director Ken Lozen Chapter Relations Dale Regnier Certification Jessica Truhler Sponsorship/Ad Sales Blake Finger Marketing/Social Media Kate-Madonna Hindes Membership Jason Acord Meetings Erin Babarskis Design/Production Sue Peterson

FEATURES 12

Evaluation and Repair of Reinforced Concrete Concrete Bridges By Jacob Borgerson And Oscar Aguirre

18

Specialized Post-Tensioning Assessment and Repair of Bridges By Paul Parfitt and Travis Green

24

Restoration of the Jacques Cartier Bridge Masonry Pillars By Luc Genest

28

Rehabilitation of the Historic Richland Avenue Bridge By William Vermes

34

Silver Jubilee Bridge: A 25-Year Concrete Repair Strategy By Paul Lambert

40

State of the Institute By Mike Levin

DEPARTMENTS 2 8

ICRI COMMITTEE CHAIRS

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Awards

Elena Kessi Aquafin Bui lding Produc t Systems

Certification

Tom Donnelly Sika Corporation

Chapters

John McDougall Baker Roofing Co., Inc.

Education

Scott B. Harrison, PE Construction Insight, Inc.

Fellows

Tom Ouska

32 38 43 44 46 48

President’s Message TAC Talk Secretariat Update 2017 2017 ICRI Fall Convention New Column! Legal Insight Concrete Repair Calendar Industry News Association News People on the Move

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52 55 56 59 64 64 64

Chapter Meetings & Events Chapter News Chapters Committee Chair’s Letter New Products New ICRI Members Market Place Classified Ads Index of Advertisers

NOTE FROM THE EDITOR

Manganaro Midatlantic

Finance

Scott Greenhaus STRUCTURAL

Marketing/Membership

Jessi Meyer Cortec Corporation

Meetings & Conventions

Ingrid Rodriguez

JSS Property Professionals, Inc.

Publications

Scott B. Harrison Construction Insight, Inc.

Technical Activities

Fred Goodwin BASF Construction Chemicals

CRB

EDITORIAL DEADLINES

January/February 2018—November 1, 2017 Theme: Repair In New Construction March/April 2018—January 2, 2018 Theme: Docks, Locks and Canals May/June 2018—March 1, 2018 Theme: Health and Safety in Concrete Repair July/August 2018—May 1, 2018 Theme: Sustainability Sustainability and Re-purposing

ON THE COVER: This COVER: This photo shows the rehabilitated bell towers at The Chapel at Bowdoin College in Brunswick, ME. For more i nformation ONthis THEproject, COVER:seeCast-in-place concrete viaduct viaduct on the article onconcrete page 20. on the island of Oahu, Hawaii. See page 18.

Fall is here and it’s time to start thinking about the ICRI Fall Convention at the Hyatt Regency New Orleans Orlea ns (November 1517, 17, 2017). 2017). Tis is the “must attend attend”” industry industr y convention dedicated solely to concrete repair and restoration. Tis fall’s convention, Docks, Locks and Canals , will feature one-of-a-kind networking opportunities and technical sessions. Te 2017 ICRI Fall Convention Convention provides your company a unique opportunity to showcase your services, promote products, conduct research, and build your brand among the largest audience of concrete repair and restoration professionals in the industry. ICRI Fall Con ventions have had over 300 concrete repair and restoration professionals from all segments of the concrete repair industr y in attendance. Don’t miss out on the best opportunity for new business, new connections and new lea rning. Register today! Tis month, the CRB theme theme is Bridges and Highways. Te articles feature several different types of bridge designs, ages and types of repairs. Bridge and highway repairs are often major construction projects that can greatly affect traffic and our lives for a significant period of time. We are also pleased to introduce a new column entitled entitle d Legal Lega l Insight (pg. 38). 38). Matthew Pavlides and Justin Ellers of the law firm Miles & Stockbridge disc uss the new OSHA construction standard for crystalline silica. Jerry Jerr y Phenney Editor, CRB MAPEI Corporation

SEPTEMBER/OCTOBER 2017

CONCRETE REPAIR BULLETIN

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PRESIDENT’SMESSAGE

BRIAN DALEY

Greetings, I hope this issue of the Concrete Repair Bulletin (CRB ) finds all members and supporters busy, productive and profitable. It has been a very busy summer for the International Concrete Repair Institute (ICRI), with notable accomplishments that continue to add value to membership in our organization.

As reported in the last edition of the CRB , ICRI has reinforced our partnership with the American Concrete Institute through the new Memo of Understanding (MOU) established between our organizations. Tat MOU reaffirms ICRI’s lead role in guidelines and practices for concrete repair, so design professionals, contractors and material suppliers who are focused on concrete repair can increase both their knowledge of and their exposure within the industry by participation at ICRI’s local chapter meetings and attendance at national conferences. ICRI’s growing list of affiliations with other organizations likewise provides ICRI members with opportunities for information sharing and expanded networking. ICRI’s Secretariat continues to receive, evaluate and in many cases approve development of exciting and important ideas for products and ser vices to enhance ICRI membership. Four different certification programs have been proposed for Secretariat consideration that would allow members to separate themselves from their competition by validating their companies’ and employees’ repair skills. One was declined, but two of the certification programs were approved for development, with one still pending evaluation. Five videos have been produced by ICRI with information about the ACI 562 Repair Code and Guide. A webinar on the bond pull-off test is under development in committee with live launch anticipated by end of 2017/early 2018. An educational product involving 20 training modules for identifying cracks in concrete is also under development in committee. In addition, functional products similar to the ICRI’s very popular sets of surface

profile chips, tools that will provide simple and easy-to-use visual baseline comparisons to check against field conditions, are on the drawing board. In July, ICRI’s executive committee met at our management company’s offices in St. Paul, Minnesota, to deal with a variety of ICRI’s administrative and operational issues. Among the topics discussed were proposed revisions to ICRI’s by-laws and our policy manual, to simplify and streamline the by-laws and to move processes and procedures previously detailed there over to the policy manual. When the revisions are complete and approved by the board of directors, the by-laws should be a tight and efficient document for organization governance, and the policies and procedures manual will provide more detail and instruction for a wide range of operational issues. As all chapters are independent entities, they are not bound by the revisions to the updated by-laws and policies manual, but it is hoped that chapters can be guided by and potentially adopt the improved administrative tools when they are finalized. As we head to the last weeks of the summer, it is not too early to start looking ahead to the ICRI Fall Conference in New Orleans, November 15-17. Registration is now open on the ICRI website (www.icri.org), with information about hotel arrangements, conference speakers and topics, and the full schedule of committee meetings. Join us for great information, camaraderie, and possibly a late night investigation of concrete failures at various establishments along Bourbon Street. Laissez les bon temps rouler!

2017 ICRI President

ICRI INFORMATION UPCOMING ICRI DATES & EVENTS

CERTIFICATION CLASSES Concrete Slab Moisture Testing Certification Program • September 27-28, 2017—Baltimore, Maryland, area • November 7-8, 2017—Denver, Colorado, area • October 3-4, 2017—Pompano Beach, Florida • January 24-25, 2018—Las Vegas, NV (World of Concrete) • January 30-31—Las Vegas, NV (TISE West) YOU CAN FIND MORE INFO RMAT ION ABOU T TH ESE AN D OTHER ICRI PROGRAMS ON OUR WEBSITE, WWW.ICRI.ORG .

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2017 ICRI FALL CONVENTION November 15-17, 2017 Theme: “Docks, Locks and Canals” Hyatt Regency New Orleans, New Orleans, Louisiana WORLD OF CONCRETE 2018 Exhibits: January 23-26, 2018 Seminars: January 22-26, 2018 Las Vegas Convention Center, Las Vegas, Nevada

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SUPPORTING MEMBERS

Saint Paul, Minnesota www.3m.com

Norcross, Georgia www.whitecap.com

Jessup, Maryland www.calindman.com

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West Hartford, Connecticut www.ahharris.com

Manitowoc, Wisconsin www.hmicompany.com

Baltimore, Maryland www.concretecpr.com

Shanghai, China www.horseen.com Harmony, Pennsylvania www.advpolytech.com

Elkton, Maryland www.aquafin.net

Attleboro, Massachusetts www.contractingspecialists.com

Saint Paul, Minnesota www.cortecvci.com

Baltimore, Maryland www.kenseal.com

Shakopee, Minnesota www.buildingsystems.basf.com

Atlantic Beach, Florida www.lymtal.com

Cleveland, Ohio www.euclidchemical.com

Hollywood, Florida www.bengoaconstruction.com

Kapolei, Hawaii www.bondedmaterials.net

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Deerfield Beach, Florida www.mapei.com

Parsippany, New Jersey www.protectosil.com

Georgetown, Kentucky www.minovaglobal.com Minneapolis, Minnesota www.graco.com


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SUPPORTING MEMBERS

A Division of Crossfield Products Corporation Rancho Dominguez, California www.miracote.com

Florence, Alabama www.hpsubfloors.com Renate, Italy www.teknachem.it

Aurora, Illinois www.prospec.com

Cleveland, Ohio www.swconcretecoatings.com

Renate, Italy Chicago, Illinois www.tennantco.com

Columbia, Maryland www.pullman-services.com Lyndhurst, New Jersey www.sikausa.com

Aurora, Colorado www.ufloorsystems.com

Atlanta, Georgia www.quikrete.com Pleasanton, California www.strongtie.com

Baltimore, Maryland www.restorationeast.com

Winnipeg, Manitoba, Canada www.vector-corrosion.com

Columbia, Maryland www.structural.net Hampshire, Illinois www.wrmeadows.com

Riyadh, Saudi Arabia www.saveto.com

Cincinnati, Ohio www.ssrg.com

ICRI would like to thank all of our Supporting Members, whose dedication to ICRI is greatly appreciated. Their continued support has greatly enhanced programs both within ICRI and the concrete repair industry as a whole.

WWW.ICRI.ORG



7

TAC TALK

ICRI TAC, SIC, SECRETARIAT, AND COORDINATION As ICRI continues to evolve, there needs to be an explanation of the roles and interaction between the echnical Activities Committee (AC), Strategic Implementation Committee (SIC), Coordination Committee, and the newly created Secretariat. Te echnical Activities Committee (AC) recommends, implements, and oversees technical activities undertaken by ICRI consistent with policies established by the ICRI board of directors and has been in existence since nearly the founding of ICRI. One standing AC subcommittee reviews and selects speakers/presentations for technical sessions at ICRI conventions. Four other subcommittees were recently formed as described in this column in the last issue of the Concrete Repair Bulletin ( July/August 2017) discussing “AC’s Role in ICRI” (http://tinyurl.com/AC-CRB-June-17 ). Te operation and function of AC is as the quality control of technical committees continues. FRED GOODWIN

An organization must also have a vision, mission, and strategy to guide its activities. Periodically, the strategic plan must be reviewed and updated so it continues to fulfill the vision and mission of the organization. Te mission of ICRI is to provide education, certification, networks, and leadership to improve the quality of repair, restoration, and protection/preservation of concrete and other material systems. he Strategic Implementation Committee (SIC) was formed to implement the latest revision of the strategic plan and framework that was discussed in an article in the January/February 2015 Concrete Repair Bulletin (http://tinyurl.com/StratVisCRB-Jan15 ). Chaired by Chris Lippmann, the SIC group met for about 18 months to create means to improve ICRI and its ability to serve the concrete repair industry. Several initiatives resulted from its activities including the formation of the Secretariat, revision of the bylaws, and identification of the organization’s strategic pillars of organization credibility, organization strength, professional development, and industry leadership. Te Coordination Committee was founded at the ICRI 2010 Spring Convention based on an idea “borrowed” from ASM C09 where all committee chairs meet to coordinate tasks, hear updates from staff, and review strategies. Its mission was established to “facilitate harmonization of document development and committee operation process between ICRI committees, both technical and administrative”. While the technical committees were coordinated by AC, the administrative committees and technical committees were not linked except through the association management company, executive committee, and board of directors. Tere was no group addressing the details between the various committees such as providing training on the processes and tools used by ICRI. At 8



the first coordination meeting, a training seminar was conducted on how to use the ICRI web site. As the functions of the Coordination Committee evolved, it became an information exchange platform for initiatives in ICRI. Once the Secretariat was formed, it was mutually decided to pass the leadership of coordination to the Secretariat since its mission was closely aligned with the existing committee. Te formation of the Secretariat was one of the outcomes of the SIC. An article on its creation can be found in the Sept/ Oct 2016 Concrete Repair Bulletin (http://tinyurl.com/ ICRISecretariat) Tey function as “air traffic controllers” for idea collection, coordination between different parts of ICRI, and communication between the committees. Te Secretariat’s goal is to provide fulfillment of the ICRI strategic objectives under the four strategic drivers of industry leadership, professional development, organizational strength and organizational credibility. For satisfaction of this goal, the ICRI Secretariat facilitates the orderly implementation of ideas within the ICRI organization by receiving and processing ideas from our members, and monitoring the results through contact with the ICRI committees, task groups, and members. Te task of the Secretariat is to assure that ideas and issues are heard, disseminated, and managed by the appropriate ICRI committees and task groups. Te Secretariat’s role directs the ideas and issues to the appropriate committee or task group without regulating the actual implementation. It was logical that the Coordination Committee now fall under its jurisdiction. ICRI continues to grow and evolve as the only organization to address the needs of the concrete repair industry. Changes will continue, hopefully to always make ICRI more transparent, current, and useful to its members and others in the concrete repair community. � Fred Goodwin is Chair of the ICRI Technical Activities Committee (TAC).

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SECRETARIATUPDATE THE ICRI IDEA AND INITIATIVE APPROVAL PROCESS he fl ow ch ar t be low re pr esents wh at generally happens to an idea once it is submitted to ICRI by a member, nonmember, or committee. Some of you have witnessed this process during a convention at the Secretariat and/or committee meetings; some have heard it being conducted during monthly Secretariat conference calls; while JEFFREY BARNES others may have learned about it on the ICRI web site. W hether witnessed or heard, these are always lively and robust discussions. After reviewing this flow chart, some of you may be wondering how an idea is approved to become an initiative. Before that can be discussed, remember the impetus for the creation of the Secretariat—formed from the efforts of the Strategic Implementation Committee to reduce redundancy, confusion and frustration, and to streamline the thought process so that every idea can be considered, all toward the goal of continued growth and development of ICRI along its four strategic pillars: organizational credibility, organizational strength, professional development, and industry leadership. Te question of authority came up during a recent conference call. Authority as in who has the final say as to whether or not an idea has enough merit to become an initiative, and does the Secretariat answer to the Executive Committee (EC) and the board of directors (BOD)? Remember the pre-Secretariat days at ICRI and how much

confusion there was trying to get things done, or how long it took to get something accomplished? Members have reported that it was much like banging your head against a wall. Tis feeling of frustration and getting nowhere fast is exactly what the Secretariat was created to alleviate. Ideas are reviewed against the strategic pillars (industry leadership, professional development, organizational strength and organizational credibility). If the idea doesn’t mesh with these then chances are good it will not become an initiative. For checks-and-balances, the Secretariat provides the Executive Committee with a written update of what is happening, how many ideas and initiatives there are, and presents updates to the board of directors during the conventions and scheduled BOD meeting as needed to discuss ongoing ideas and initiatives. Committees and task groups are then identified/formed to address the idea, finalize a go-tomarket assessment, and develop a return on investment (ROI) model (if applicable)—a feasibility study of sorts, for final approval/rejection of the initiative by the EC/BOD. In addition, the Coordination Committee assists in the involvement of all committees working on the idea/initiative. As a result of di scussions du ring a recent conference call, the Secretariat is going to take it one step further and draft an appeal process to be followed should an individual not agree with the decision of the Secretariat. Tis appeal process will be reviewed by the board of directors, the Executive Committee, and the association management company, to name a few. It is this attention to detail and the review process that is allowing the Secretariat to act as intended— ideas are heard, discussed and voted on. ICRI is on the move (thanks, Rick!) and it’s picking up speed. � Jeffrey Barnes is an ICRI Secretariat and member of the ICRI board of directors.

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Evaluation and Repair of Reinforced Concrete Bridges BY JACOB BORGERSON AND OSCAR AGUIRRE

Fig. 1: Reinforced concrete bridge originally constructed in 1931

A

ccording to the 2017 United States Infrastructure Report Card, the U.S. has 614,387 bridges, with almost four in 10 being 50 years or older.1 Due to the high cost of planning, design, and construction, replacement of bridges is often not an economical solution. As a result, many cities and states dedicate their resources to the repair and rehabilitation of their concrete bridges. Figure 1 shows a bridge that was originally constructed in 1931 that underwent a repair and rehabilitation effort. Tis article describes common types of distress, evaluation methods, and approaches for repairing reinforced concrete bridges. Distress and Failure Mechanisms

Reinforced concrete bridges may experience distress caused by corrosion, fire, alkali-silica reaction, delayed ettringite formation, and other conditions. While there are many sources and combinations of distress, four of the common failure mechanisms will be briefly discussed. 12



Corrosion of reinforcing steel and other embedded metals is the most common cause of concrete deterioration. When steel corrodes, rust occupies a greater volume than the original steel. Tis volume expansion of corroding steel creates tensile stresses in the concrete and causes cracking and spalling of concrete (Fig. 2). Corrosion is typically caused by either carbonation-induced corrosion or chloride-induced corrosion. Carbonation of concrete reduces the pH of concrete and causes the passivating (protective) layer on steel to disappear. Carbonation-induced corrosion occurs in older structures with minimal concrete cover (distance between the surface of embedded reinforcement and the outer surface of the concrete). In certain environmental conditions (salt water, deicing salts, chemical plants), chloride ions can penetrate the passivating layer (i.e., chloride-induced corrosion). When concrete is exposed to heat (i.e., fire), cracking, spalling, and discoloration can occur (Fig. 3). Spalling is the surface WWW.ICRI.ORG

flaking of concrete and can occur in the temperature range of 302°F (150°C) to 572°F (300°C). 2 While opinions differ on the dominant mechanism that causes concrete spalling, it is generally believed to be caused by a combination of pore pressure and thermal stresses. Pore pressure induced spalling occurs when the free water in the concrete vaporizes, expands, and causes spalling once the pressure exceeds the tensile strength of the concrete. Termal stress induced spalling is the result of near surface compressive stress (due to restrained thermal expansion) creating a fracture plane between the heated surface and cooler interior region. Alkali-silica reaction (ASR) is distress that is caused by the reaction between the alkalis in portland cement and siliceous minerals that may be in some aggregates. In the presence of moisture, this reaction forms an alkali-silica gel that is expansive. When this gel expands, it causes pressure within the concrete matrix, resulting in concrete cracking.

Fig. 2: Reinforcement corrosion causing spalling of concrete bridge beam

Delayed ettringite formation (DEF) is the formation of ettringite after the concrete has already hardened, which consequently causes expansion and cracking of the concrete (Fig. 4). While the specific mechanism is not fully understood, concrete curing temperatures greater than 160°F (71°C) and exposure to significant moisture during its service life appear to be factors that may contribute to DEF.

Assessment of Existing Bridges

Fig. 3: Spalling of concrete box beam and exposed prestressed strand due to fire event

Visual assessment is one of the simplest methods for evaluating reinforced concrete bridges. One should look for evidence of surface distress, such as cracking and spalling, as described earlier. While visual assessment is effective, it does not provide an evaluation of the concrete beyond the exterior surface. Consequently, visual assessment should be performed in conjunction with other evaluation techniques, such as acoustic sounding, impact-echo, ground penetrating radar, and petrographic examination. Acoustic sounding (ASM D45803) is used to determine if the concrete has delaminated. Te technique can be either implemented using a chain or hammer. For vertical and overhead concrete elements, typically a hammer is used to tap the concrete surface to identify a dull hollow sound (imagine the sound of a loose ceramic tile on the floor). For locating delaminations on the top of bridge decks, the chain drag method is usually implemented. Other techniques that use sound waves are impact-echo (ASM C13834) and ultrasonic pulse velocity (UPV) (ASM C5975). Impact-echo is a nondestructive technique that uses acoustic waves to assess concrete structures. Impact-echo has been shown to be an effective method for detecting voids and defects within concrete elements. UPV transmits an ultrasonic wave through the thickness of the concrete element and measures the velocity. Because wave velocity is related to the mechanical properties of a material (i.e., density, elastic modulus), the velocity can be used as an indicator of the concrete quality. Ground penetrating radar (GPR) (ASM D60876) is a nonWWW.ICRI.ORG

Fig. 4: Cracking of concrete bridge abutment cap due to delayed ettringite formation

destructive method that transmits and receives electromagnetic waves through the concrete to detect embedded materials. GPR is effective for determining the spacing and location of steel reinforcement. If the concrete cover needs to be determined, typically, the GPR results are supplemented with the use of a cover-meter. Petrographic examination (ASM C856 7) is often used to assess the quality of hardened concrete. A core is extracted from the concrete structure and a microscope is used to evaluate the condition and composition of the concrete sample. Various SEPTEMBER/OCTOBER 2017


13

carefully considered when developing repair options and pro viding recommendations for the concrete repair depth.

Fig. 5: Phenolphthalein applied to concrete core cross-section to deter mine depth of carbonation

types of deterioration can be examined, such as: alkali-silica reaction, fire damage, and carbonation depth (Fig. 5).

Design of Bridge Repairs Development of a bridge repair design should be performed by a licensed design professional. Te service life, structural condition, concrete failure mechanism, and load rating should be considered when preparing bridge repair and strengthening options. Life-cycle cost analysis has shown to be an effective approach for determining the lowest cost option by considering all maintenance and replacement costs. Te National Cooperative Highway Research Program (NCHRP) has developed tools to help calculate life-cycle costs of project alternatives. Estimation of remaining service life is an important factor for life-cycle cost calculations. Since many factors such as load rating, environmental exposure, and material properties affect the service life, this determination requires experience and knowledge of the performance of similar structures under similar conditions. Current AASHO LRFD Bridge Specifications8 define the design life as 75 years; however, there is no direct correlation between design life and service life, defined as the period of time that the bridge is expected to be in operation. Assessment of the current structural condition is necessary to determine if the repair must restore structural capacity or simply protect the structure from further damage. Repair of concrete spalls by partial depth repairs typically does not restore the load capacity. In situations where large sections need repair, shoring and jacking may be required to unload the structure allowing the new concrete to contribute to the load capacity once the shoring is removed. Finally, the effects of live load during repairs should be evaluated to determine if the bridge requires partial or complete closure while repairs are completed.

An insufficient load rating (i.e., loss of capacity) may require strengthening of the structure. Fiber reinforced polymer (FRP) fabric and laminates have become advantageous for concrete strengthening due to their high tensile strength, light weight, and corrosion resistance. Unfortunately, the tensile behavior of FRP materials typically exhibit a linearly elastic stress-strain relationship until an abrupt failure. Consequently, design guides limit the amount of strengthening that can be provided with these FRP composite materials to prevent a sudden and catastrophic structural failure (i.e., a failing bridge should be visibly apparent and allow time for the public to evacuate).

Repair of Concrete Bridges Repair of reinforced concrete can entail a wide range of procedures.9 ypical repairs involve removal of deteriorated concrete, placement of new concrete, reinforcement replacement, and/or application of externally bonded FRP. Unsound concrete is commonly removed with chipping hammers or hydrodemolition. Concrete needs to be removed at least ¾ in (19 mm) behind the reinforcement or ¼ in (6 mm) larger than the nominal maximum size of the coarse aggregate for the repair material, whichever is larger. Te steel reinforcement should be cleaned of all rust, dirt, concrete, and anything that may prevent bond with the repair material. If the reinforcement shows signs of section loss, then the diameter of the deteriorated reinforcement should be measured. If too much of the steel has been reduced, this should be communicated to the licensed design professional, so that actions can be taken to restore the structure to its design strength. Repair concrete may be placed using a variety of techniques. For horizontal surface repairs, concrete is usually poured or pumped onto the prepared surface and then screeded and troweled. Te majority of underside (overhead) bridge repairs are typically performed using a trowel applied or a form and pour/ pump technique. rowel applied repairs are limited to shallow and small surface areas. For larger structural concrete repairs, a formed cavity is constructed and the repair concrete is poured (or pumped) into place. FRP has become an effective approach for the strengthening of existing concrete structures (Fig. 6). Tere are a few approaches for installing FRP systems. Often times, a wet layup application is used. Te wet layup method involves saturating the fiber sheets with resin, applying the sheets to the concrete surface, and then allowing the system to cure in-place.

Evaluation of Concrete Repairs and Strengthening Te type and extent of the concrete failure mechanism should be considered in selecting a repair method. For example, if the depth of carbonation has exceeded the concrete cover, areas that do not show evidence of distress may spall due to carbonation induced corrosion in the near future. Consequently, the results of the material testing during the initial assessment must be 14



During the repair process, an independent third party should be involved to provide evaluation and testing. Various aspects of the repair process may be evaluated, including: concrete surface preparation, application of FRP, bond strength testing (concrete and/or FRP), installation of steel reinforcement, and concrete field testing.

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Prior to application of the repair material (i.e., FRP, concrete), the surface preparation of the existing concrete should be observed to confirm that it is clean, free of loose materials, and has the appropriate profile/roughness (typically, as defined by the ICRI concrete surface profile [CSP] chips 10). Te repair material and specific situation will dictate the surface profile required. For FRP applications, a concrete surface profile of 3 (CSP 3) is commonly required. Te installation of new/supplemental steel reinforcement should be observed before concrete is placed to verify proper reinforcement size, placement, and splicing. If new reinforcing bars are dowelled into existing concrete, the installation process may need to be observed, in addition to verifying dowel hole size and cleanliness.

Fig. 6: Strengthening of concrete bridge using externally bonded FRP

Repair concrete should be sampled in accordance with standardized procedures. est cylinders are typically molded during the concrete placement to determine compliance with the concrete strength specification. In addition, slump testing or slump flow (for self-consolidating concrete) may be performed to ensure that the concrete has the appropriate consistency prior to placement. If FRP is being applied, it may be required to observe the mixing of the epoxy (mixture ratio and time), application of the epoxy to the fiber, and installation of the composite system to the concrete. Similar to steel reinforcement, the correct size (strip length and width) and placement of the FRP should be verified.

Fig. 7: Bond strength testing of an FRP test panel applied to concrete

Once the repair material has been applied, sounding (i.e., tap test) can be performed to determine if delaminations exist between the repair material and the existing concrete. Often times, it is necessary to provide quantitative evaluation of bond strength. Pull-off or bond testing (ASM C1583 11, ICRI 210.3R 12, ASM D7522/D7522M 13) is used to measure the adhesion strength between the existing concrete substrate and the repair material (Fig. 7).

3. ASM D4580, Standard Practice for Measuring Delaminations in Concrete Bridge Decks by Sounding , ASM International, West Conshohocken, PA, 2012, 4 pp.

Summary Repairs to reinforced concrete bridges can range from simple to extremely complex. Several factors should be considered when proceeding with a bridge repair program, including existing structural condition, concrete failure mechanisms, service life, and load rating. In addition, owners should understand the costs and planning that are required to perform an initial assessment, repair design, repairs, and independent third party testing. �

5. ASM C597, Standard est Method for Pulse Velocity Trough Concrete , ASM International, West Conshohocken, PA, 2016, 4 pp.

References 1. ASCE. Bridges , in U.S. Infrastructure Report Card. American Society of Civil Engineers, 2017, 4 pp. 2. G.A. Khoury and Y. Anderberg. Concrete spalling review. Fire Safety Design (Report submitted to the Swedish National Road Administration), 2000, 60 pp. WWW.ICRI.ORG

4. ASM C1383, Standard est Method for Measuring the P-Wave Speed and the Tickness of Concrete Plates Using the Impact-Echo Method , ASM International, West Conshohocken, PA, 2015, 11 pp.

6. ASM D6087, Standard est Method for Evaluating AsphaltCovered Concrete Bridge Decks Using Ground Penetrating Radar , ASM International, West Conshohocken, PA, 2008 (2015) e1, 6 pp. 7. ASM C856, Standard Practice for Petrographic Examination of Hardened Concrete , ASM International, West Conshohocken, PA, 2017, 14 pp. 8. AASHO LRFD Bridge Design Specifications, 7th Edition, American Association of State Highway and ransportation Officials, Washington, D.C., 2014, 2016 pp.



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9. P.H. Emmons. Concrete Repair and Maintenance Illustrated , R.S. Means Company, Inc., Kingston, Massachusetts, 1994, 295 pp. 10. ICRI Committee 310, “Selecting and Specifying Concrete Surface Preparation for Sealers, Coatings, Polymer Overlays, and Concrete Repair, (ICRI 310.2R-2013), International Concrete Repair Institute, St. Paul, MN, 48 pp. 11. ASTM C1583, Standard Test Method for Tensile Strength of Concrete Surfaces and the Bond Strength or Tensile Strength of Concrete Repair and Overlay Materials by Direct Tension (Pulloff Method), ASTM International, West Conshohocken, PA, 2013, 4 pp. 12. ICRI Committee 210, “Guide for Using In-Situ Tensile Pulloff Tests to Evaluate Bond of Concrete Surface Materials, (ICRI 210.3R-2013) International Concrete Repair Institute, St. Paul, MN, 20 pp. 13. ASTM D7522/D7522M, Standard Test Method for PullOff Strength for FRP Bonded to Concrete Substrate , ASTM International, West Conshohocken, PA, 2015, 6 pp.

Jacob L. Borgerson, PhD, PE is a Senior Project Manager for Paradigm Consultants, Inc. Borg- erson received his PhD from the University of Illinois at Urbana-Champaign. He has over 15 years of experience developing and implementing test methods for assessing concrete, building materials, and structural systems. He is a member of the International Concrete Repair Institute (ICRI) and American Concrete Institute (ACI). In addition, Jacob serves on ACI Commit- tees 228, Nondestructive Testing of Concrete and 117, Tolerances for Concrete Construction. He is a licensed professional engineer in Texas and a certified ICRI Concrete Surface Repair Technician. Oscar R. Aguirre, PE is CEO of Aguirre & Fields. Aguirre has more than 25 years of experience, ranging from the design of new bridges to forensic investigations of historic bridges. Oscar is a graduate of Texas A&M University with both a BS in civil engineering and a ME in structures. Oscar is a member of the American Concrete Institute (ACI). He is a licensed professional engineer in Texas and Oklahoma.

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• Qualifies individual to perform pre- and postplacement inspections and testing

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“The ICRI CSRT program has assembled a vast amount of information… an individual can learn best practices that typically take five to ten years to accumulate . Whether you are new to concrete repair or experienced…this program has something for everyone.” Jacob Borgerson, Paradigm Consultants, Inc., Houston, TX Certified Concrete Surface Rep air Technician-Grade 1

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Specialized PostTensioning Assessment and Repair of Bridges BY PAUL PARFITT AND TRAVIS GREEN

Cast-in-place concrete viaduct on the island of Oahu in Hawaii

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he concept of imposing pre-service stresses on hardened concrete has been around in the United States for almost 130 years. While not an unknown technology, most attribute the introduction of prestressed concrete as a valid building material to when in 1888, P.H. Jackson was granted the first patent on prestressing concrete. Troughout the course of over a century, the design and construction of prestressing has evolved from simple sidewalks to multi-span, mile long viaducts. Tis evolution first began with the identification and understanding of prestress losses in the early 1900s and then the utilization of higher strength concrete and steel materials in the 1930s. In the late 1960s and early 1970s, low relaxation strands were introduced which reduced prestress losses significantly. More recently, attention has been towards the enhancement of corrosion protection details and installation methods to create even more durable structures which overall has led to very good performance of prestressed and post-tensioned bridges in the U.S. Post-tensioned (P) bridges and buildings became more popular in the early 1960s. Buildings typically utilized unbonded systems like paper-wrapped stress relieved strands or parallel multi-wire button head systems. Note that for bridges, multi18



strand tendons can be located within the concrete (internal) or outside the concrete (external). Internal tendons are typically draped (i.e., curved) while external tendons are typically harped (i.e. straight between high and low points). Some P bridges utilized unbonded systems but eventually bonded multi-strand systems were more common. Current unbonded systems typically include strands, grease or wax, and a high density polyethylene (HDPE) or polypropylene coating. Bonded systems typically include strands, metal or plastic ducts, and some type of cementitious grout. For either system, the combination of a sealed duct along with either grease, wax, grout, or coating assist in protecting the strand and preventing strand or wire corrosion. Tis article will primarily focus on grouted tendons, touching base on known issues and remediation identified in specific eras of “modern” P construction: the pre-2000s, the time frame between 2000 and 2010, and the present. All the while, discussing methods developed for inspection and assessment of P bridges and the future path for the industry. Pre-2000s

Prior to the early 2000s, the grout in grouted tendons was WWW.ICRI.ORG

comprised mainly of cement and water which, combined with contemporary grouting procedures, resulted in bleed water and entrapped air voids inside the ducts. Te bleed water would eventually float to the high points of the tendons, evaporate, and either create or increase the size of the air voids inside the ducts. When the air void becomes large enough, the strands are exposed and no longer protected from corrosion effects. In addition to grout voids (Fig. 1), there was also a tendency for the upper layer of grout to have lower water-to-cement (w/c) ratios resulting in relatively light colored and softer grout that is more permeable to water penetration. Over time, and in particular if the tendon was not protected from repeated moisture and air intrusion (recharging), corrosion of the strands could occur. In the U.S., deterioration of the P systems at the Mid-Bay Bridge in Destin, Florida, and Sunshine Skyway Bridge in St. Petersburg, Florida, initiated research that resulted in modifications to P  corrosion protection systems. 1 Te Federal Highway Administration (FHWA) and Florida Department of ransportation (FDO), to a large degree, led the nation’s efforts to revise P installation and corrosion protection standards. Teir research and studies2,3 resulted in updated design guidelines and specifications as well as the need to develop new grout materials. Te updated guidelines/specifications primarily addressed grouting pressures, vent locations, and vent sequencing. Newly developed high performance grouts assisted with the specification requirement for filling the duct full of grout. Te first of the “modern” grouts utilized relatively simplistic admixture combinations while later thixotropic grouts utilized more advanced “recipes” in order to provide a material that would limit bleed water and completely fill the entire duct cross section prior to advancing along the duct. In combination, the new construction requirements and grout materials significantly limited grout voids, and therefore, corrosion of the strands.

Fig. 1: Grout void at an external tendon resulting in strand corrosion

gories. Tis information was then utilized to develop numerous follow-up actions ranging from no additional actions required, to regularly scheduled inspections, to full scale repairs or bridge replacement. Tese protocols can be seen in further detail in the FHWA’s echnical Advisory -5140.33 3.

Previous Assessments of Post Tensioned Bridges For reference, external tendons are generally easier to inspect except for the tendon high and low points which are often encapsulated in diaphragms or blisters, respectively. Inspection methods for the free length of these tendons can be as simple as mechanical sounding to locate grout voids and drill hole openings into the HDPE duct to confirm strand conditions. Tere are also more sophisticated inspection techniques like magnetic flux leakage, capacitance testing, and radiography, but the challenges and advantages of these techniques are beyond the scope of this article. Te inspection of internal tendons is more difficult and has traditionally relied on visual inspection via, most commonly, discrete drill hole openings (Fig. 2), as

2000 to 2010 In 2010, one manufacturer identified that one of their grout materials was being manufactured with chloride levels greater than the 0.08% by weight of cement FHWA limit 4. Te chloride contaminated grout was eventually identified to have been manufactured between 2002 and 2010 and had come from their Marion, Ohio, plant. Te source of the chlorides was discovered to be due to one of their outsourced material suppliers. Originally traced back to a “bridge zero” in exas, the manufacturer announced that the material had affected over 200 projects including 120 bridges in 39 states. In response to this issue, the manufacturer and FHWA published a technical advisory which developed a tiered protocol to address the bridges that were identified as utilizing grout from this plant between 2002 and 2010. Te protocol involved utilizing numerous pieces of information from not only the grout manufacturer but also the bridge designs to develop chloride concentration groups, P protection levels, and risk level cateWWW.ICRI.ORG

Fig. 2: Discrete drill hole openings (note grout void identified within metal duct in upper right drill hole)



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well as larger inspection openings (Fig.3). Te visual inspection aspect focuses on identifying obvious distress while the drill hole openings allow for the identification and location of gout voids. Further inspection of the duct using a borescope/videoscope (Fig. 4) can assist in the determination of grout void size/ length as well as strand conditions ( refer to PT grading scheme from PCI’s Journal of May-June 1992 5). Larger openings allow for a more detailed strand assessment and grout sampling for materials testing. Te most common method for identifying P tendons for inspection is to utilize ground penetrating radar (GPR). Once the tendons have been located, the appropriate inspection method(s) can be performed, whether this is by visual inspections as identified above, materials testing, or through nondestructive methods such as infrared thermography, ultrasonic shear-wave tomography (Fig. 5), magnetic flux leakage, vibration analysis, and gamma radiography. Te type of assessment methods used will be highly dependent on numerous factors including, but not limited to, the P system, environmental conditions, bridge construction, owner’s needs and concerns, and access.

Fig. 5: Ultrasonic shear-wave tomography to identify internal voids in embedded ducts

Fig. 3: Duct opening exposing tendon for visual gradation using PCI criteria

Equally important as assessing and grading the P strands themselves, assessment of the grout (Fig. 6) can provide important and valuable data and numerous test methods can be utilized depending on the type of concern with the P system and level of information required. Material tests can include scanning electron microscopy (Fig. 7), chloride analysis, and petrography, all of which will provide different types of information on the physical characteristics of the grout such as chemical makeup, air entrainment, and hydrated cement content. Most of these methods; however, are destructive in nature and require careful planning in regards to sample location and repairs in order to ensure the P elements are restored to a water-tight state to prevent any future deterioration. No matter which assessment methods are used, it is important to note that despite the vast amounts of information obtained from each individual assessment method, the data collected most times will only provide a piece of the overall puzzle, and typically a combination of testing and/or inspection openings need to be performed to verify results and provide a larger collaborative picture of the health of the bridge.

Fig. 4: Borescope image of grout void within duct as observed through a discrete drill hole opening

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In the past, there wasn’t a set standard for the specialized inspection of P bridges. Consequently, specialized inspection protocols have been at the discretion of individual engineers/ contractors. Tis often resulted in somewhat arbitrary decisions about what to do as part of a specialized P inspection. For

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example, how are different bridges/tendons categorized or prioritized? Given a certain category/prioritization, how detailed is the visual inspection? How many openings are provided? What type of openings are provided (drill hole versus large area)? Where are the openings going to be installed (at anchors or high points)? What type of materials testing is required/ desired (petrographic, chlorides, sulfates)? Are corrosion measurements (corrosion potential or corrosion rate) valuable given the complexity of the test methods and P  installation? While there may not be anything wrong with the selected inspection process in general, care needs to be taken to determine the appropriate methods to be used. raditionally, the amount of information collected is balanced with the client’s cost and/ or specific needs. In many cases, this results in a phased work approach that is intended to provide the client with sufficient information to assist in a discussion regarding the need for additional inspection and repairs.

Fig. 6: Grout inspection opening showing striation of soft (white) to hard (grey) grout

Present PT Construction and Current Assessment Guidelines Te FHWA published a document in January 2012, Guidelines for Sampling, Assessing, and Restoring Defective Grout in Prestressed Concrete Bridge Post-Tensioned Duct .6 Tis document provides information and guidance regarding grout sampling, testing, analysis, as well as the interpretation of the results. Included in this document is guidance and information on how to determine the “correct” number of grout samples as well as sampling protocols and testing procedures.

Te guide provides commentary regarding a statistical riskbased approach to grout sample sizes based on numerous factors including redundancy, tendon type and drape, construction defects, as well as available documentation of grouting procedures during construction. For example, if detailed information is provided on the grouting procedures and a relatively low number of grout batches were used during construction, then the odds of having large variability in the grout samples obtained will be comparatively small. Tus, only a small number of grout samples may need to be extracted. On the other hand, if regular visual inspection of a multi-span, draped tendon bridge shows signs of systemic construction defects such as grout puddles and water infiltration at expansion joints, a larger sample size of visual drill hole inspections may be necessary. Te guide also addresses two sampling options: Option 1 involves testing for chloride concentrations only, whereas Option 2 tests for all grout deficiencies. Tese options are meant to provide the owner with flexibility to efficiently address specific concerns within their bridge inventory.

What Else Can Be Done? In addition to the above testing and inspections, short and longterm monitoring methods are increasingly becoming popular with some owners as it allows them to observe real time data in relation to the condition of the P elements. ypically, these systems require the installation of monitoring probes inside the P ducts to measure characteristics such as corrosion rate and potential. Tese measurements are fed to a data acquisition system that can either be viewed and monitored in real time via WWW.ICRI.ORG

Fig. 7: Scanning electron microscope results showing chemical makeup of grout sample

a modem connection, or can be downloaded at regular inter vals. Challenges involved with these methods; however, include creating duct openings to access the grout and strands as well as the potential concern of monitoring the duct corrosion and not the strands themselves. Other monitoring devices include items that measure the internal environment of the duct such as bulk water probes, pH probes, relative humidity probes, and temperature probes.

Inspection Conclusions and Remediation Determining remedial actions to address P deterioration in bridges is not always a straightforward process and will vary greatly depending on the conditions observed, bridge criticality, bridge overall condition, expected remaining service life of the bridge, agency available funding, etc. While the 2013 FHWA SEPTEMBER/OCTOBER 2017


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guidelines assist owners, engineers, and contractors in performing this type of work, there are still decisions that need to be made in order to maintain the structure’s anticipated level of performance. In some cases, if there are no, or limited, signs of grout voids, strand corrosion, or elevated chlorides/sulfates in the grout, the potential for P system distress is minimal and no remedial action is required. At the other end of the spectrum, if extensive grout voids, strand corrosion/distress, or chlorides/ sulfates are observed, repairs may need to be implemented in the near-term or replacement of the bridge can be considered. Te more difficult decision is what to do if the noted conditions fall somewhere in between the previous two examples. In this case, additional openings, testing, and monitoring are likely to be recommended. Tis additional information will assist the owner in determining steps forward but may only represent a relatively small subset of the total population of the in-place bridge tendons. In this case, most agencies fall into two categories: 1) inspect and repair all deficiencies to limit risk, or 2) repair what needs to be addressed to maintain immediate service of the structure and live with/monitor other conditions. Since both options are reasonable in their own way, it ends up being the owner’s decision, with appropriate input, as to the path forward for any particular structure. Te trick is, do we have enough information to make a reasonable decision? And if not, what additional methods may increase the value of additional information? As the existing inventory of P bridges across the country continue to age, and as new technologies are being developed in the construction of new P bridges, it’s important that we understand the challenges and issues involved with each era of construction. Trough this understanding and in conjunction with ever evolving inspection and testing methods, we can continue to tailor inspections and assessments of P bridges in efforts to help ensure their continued service lives well into the future. �

References 1. Hartt, W. H., Corrosion Evaluation of Post-Tensioned Tendons on the Mid Bay Bridge in Destin, Florida , Florida Atlantic Uni versity, April 2002. 2. New Directions for Florida Post-Tensioned Bridges , Florida Department of ransportation (FDO), Volume 10A and 10B - Load Rating Post-ensioned Concrete Segmental Bridges, October 8, 2004. 3. Recommendations for Assessing and Managing Long-Term Performance of Post-Tensioned Bridges Having Tendons Installed

with Grout Containing Elevated Levels of Chloride, US Department of ransportation Federal Highway Administration, echnical Advisory 5140.33, November 12, 2013.

4. AASHO LRFD Bridge Construction Specifications, 3rd Edition, able 10.9.3-2, American Association of State High way and ransportation Officials, 2010, 717 pp. 5. Sason, A. S., Evaluation of Degree of Rusting on Prestressed Concrete Strand , PCI Journal, May-June 1992. 6. Guidelines for Sampling, Assessing, and Restoring Defective Grout in Prestressed Concrete Bridge Post-Tensioned Duct , US Department of ransportation, Federal Highway Administration, Publication No. FHWA-HR-12-028, January 2012. Paul Parfitt, PE, SE , is a Senior Associate with Wiss, Janney, Elstner Associates, Inc. (WJE). Paul joined the Washington, D.C. office in 2008 and has extensive experience working on structural evaluations and investigations of new and existing buildings and bridges, and is part of WJE’s difficult access team. He has performed numerous specialized structural investigations of post-tensioned buildings and bridges in Hawaii, Oklahoma, and the D.C. Metro Area. Paul is a registered structural engineer in Illinois and a registered professional engineer in Pennsylvania and Virginia. He has a bachelor’s and master’s degree in architectural engineering with a structural emphasis, from the Pennsylvania State University. Paul is a member of the Society of Professional Rope Access Techni- cians, the American Concrete Institute, the American Welding Soci- ety, and is an AWS certified welding inspector. Travis Green, PE , is an Associate Principal with Wiss, Janney, Elstner Associates, Inc. (WJE) and is co-unit manager of their Washington, D.C., office. Travis has over 17 years of experience at WJE and primarily focuses on steel and concrete buildings and bridges. Some of his in-depth experience with specialized structural inspections of post-tensioned structures has included the Leonard P. Zakim Bridge in Boston, 18 bridges statewide for Oklahoma DOT, and numerous mass transit aerial structures in the D.C. Metro Area. Travis is a registered professional engineer in Washington, D.C., Georgia, North Carolina, Virginia and West Virginia and has a bachelor’s degree from the University of Kansas and master’s degree from the Georgia Institute of Technology. Travis is an active member of the American Institute of Steel Construction and the American Welding Society, and is an advisor on AWS D1.8, vice chair of AWS D1.1, and chair of AWS D1.7 technical committees.

The leading resource for education and information to improve the quality of repair, restoration, and protection of concrete. Visit www.icri.org.

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Restoration of the Jacques Cartier Bridge Masonry Pillars BY LUC GENEST

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esigned by Philip Louis Pratley and built at the cost of $23 million, the Jacques Cartier Bridge opened in 1930, and was the first bridge constructed to connect the south shore of Montreal to Montreal Island by car. At its opening, the bridge was called Harbour Bridge (pont du Havre), but in 1934 on the occasion of the 400th anniversary of the discovery of Canada, the bridge was renamed the Jacques Cartier Bridge in homage to the French explorer. Although it was possible to reach Montreal by train via the Victoria Bridge, the Jacques Cartier Bridge remained for years the only way to reach Montreal by car, truck, or carriage. While alternate routes exist today, the Jacques Cartier Bridge still remains an important link to reach Montreal. oday, the total number of vehicles that are using the bridge is estimated at more than 34 million per year. Like many infrastructures of this era, a lack of maintenance led to the deterioration of the bridge and the masonry pillars in particular. After the installation of a new deck at the beginning of the 2000s, the Canadian Federal Government announced in 2014 a $117 million investment for the restoration of the bridge. Causes of Deterioration

Te majority of the pillars are concrete covered by limestone. For the original construction, 472,510 cubic feet (13,380 cubic meters) of natural stone was used. Unfortunately, the lack of

Fig. 1: Damaged masonry units with growing vegetation

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maintenance led to water infiltration in the masonry joints between the stone units. Water infiltration in a masonry structure, especially in a northern region, is never a good combination. After many years of water infiltration, the masonry units were damaged and vegetation started to grow (Fig. 1). Many of the stone masonry units cracked due to the water penetration and multiple freeze/thaw cycles, creating many voids between the stones and the concrete structure, and in some cases, pieces of the stone units were missing. The Solution

In 2015, a plan was developed to restore the pillars (Fig. 2). From the possible solutions, it was decided to place concrete at the surface of some damaged stones. Terefore, formwork containing reinforcement was designed (Fig. 3). Tis solution was economical, simple, and eliminated the need for replacing large stones in the middle of the St. Lawrence River. As for the voids behind the limestone, all the stones were probed, and where necessary, a grout was injected behind the stones to enable the pillars to be consolidated (Fig. 4). Repair of the cracks in the stones was then undertaken (Fig. 5). In the masonry restoration field, the use of epoxy is avoided. It is important that the new crack repair material has the same behaviors (expansion and shrinkage) as the original stone. Tere is a multitude of products that can be used for this type of application. For example, a dispersed hydrated lime grout can be used for microcracks, and other very fluid grouts can be used for cracks that are between 0.02 in (0.5 mm) and 0.20 in (5 mm) in width.

Fig. 2: Pillar repairs at the Jacques Cartier Bridge

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But a problem remained, and it was a real challenge: How to restore the limestone in a sustainable, rapid manner, and most importantly at a reasonable cost? As outlined above, it is very important that the material used to restore the stone has the same properties as the original stone. We are talking about the same compressive strengths and the same coefficient of thermal expansion of the original limestone. If the newly applied product reacts differently from the support stone, the restoration will not last. Since each project is different, a color match process needs to take place (Fig. 6). Natural stone by definition has a variety of colors and therefore, for this particular project, a series of colors was presented for approval. Among the colors proposed, two were selected, and in order to reproduce a perfect final match, they were blended on site. With this kind of project, the quality of the products used is very important, and the quality of the workforce is equally as important. Not only does the mortar need to be installed properly, but the aesthetic appearance of the final work will determine the success of the project. Te product must not only have the same coefficient of thermal expansion, but must have the same color and texture as the original stone. o accomplish a result that is visually successful, it is necessary to count on the know-how of the contractor’s team. We have all heard that on a project, time is important, but with this kind of restoration work, spending the appropriate amount of time doing the work is not only important, it is a necessity (Fig. 7).

Fig. 3: Repair includes formwork and reinforcement

Repointing the Stone Te last stage of this restoration project was the repointing of the limestone. Once again, the selection of the right mortar is very important. In masonry mortar restoration, three rules need to be respected: 1. Te new mortar has to be of equal or lower compressive strength than the original mortar; 2. Te new mortar has to be of equal or lower compressive strength than the masonry unit; and 3. Te vapor transmission capacity (permeability) of the new mortar has to be equal or greater than the original mortar. For this particular project, access to the original specification documents was available. In 1930, the specification documents called for a mortar made with one part of portland cement and one part of fine aggregate, and the mortar had to be installed “as dry as can be properly worked.” A discussion was held on whether the same recipe should be used in 2016. It was decided not to use the same formulation and here is why. Te portland cement that is produced in 2016 is not the same as the cement produced in 1930. Te portland cement from 2016 is probably two times stronger in compressive strength than the portland cement of 1930. Terefore, if the same formula had been used, the new mortar would have been too strong and the vapor permeability would have been lower than the original mortar. WWW.ICRI.ORG

Fig. 4: Grout injection behind the stones



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Fig. 6: The color match process

Fig. 5: Micro-crack injection Fig 7: Application of the mortar and final finish

Fig. 8: Final appearance of pillar at completion

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Instead, it was decided to use a ype S mortar based on proportions. In Canada, the standard, Mortar and Grout for Unit Masonry 1 specifies that the proportions for a ype S mortar are: 1 part portland cement, ½ part lime, and 3½ to 4½ parts sand. As such, a 2-1-9 proportion for the mortar was selected, and the new mortar was applied at a texture consistent with repointing (this means a reading of 0.80 in [20 mm] +/- 0.20 in [5 mm] on the Vicat cone). Te mortar was also protected from the elements, ie., direct sun and rain.

Conclusion In the end, the project was successfully executed (Fig. 8). A good design, the right products, excellent communication, and a contractor who knows that it is important to take time to execute things properly, were all essential in achieving a successful project! �

Reference 1.CAN/CSA-A179-04 (R2014), Mortar and Grout for Unit Masonry , CSA, able 3, 2004 (R2014), 94 pp.

Restoration of the Jacques Cartier Bridge Masonry Pillars

Luc Genest is the sales manager of the masonry division at KPM Industries. Luc has worked in the masonry field for over 20 years. He is a member of the Canadian Association of Heritage Professional (CAHP), and is a member of the ICRI Quebec and New York City Chapters. He is also a member of ICRI Technical Committee 410, Masonry.

Montreal, Quebec, Canada OWNER

The Jacques Cartier and Champlain Bridges Incorporated (JCCBI) Montreal, Quebec, Canada ENGINEER

EXP Services, Inc. Sherbrooke, Quebec, Canada REPAIR CONTRACTOR

Dimco Construction, Inc. Montreal, Quebec, Canada MATERIALS SUPPLIERS

King Heritage Building Solutions Boisbriand, Quebec, Canada Constec Laval, Quebec, Canada

Become a ICRI needs YOUR articles and ideas for upcoming themes!

2017-18 EDITORIAL SCHEDULE January/February 2018 Repair in New Construction: Editorial Deadline: November 1, 2017 March/April 2018 Docks, Locks and Canals: Editorial Deadline: January 2, 2018 May/June 2018 Health and Safety in Concrete Repair: Editorial Deadline: March 1, 2018 July/August 2018 Sustainability and Re-purposing: Editorial Deadline: May 1, 2018 If you are interested in submitting an article for publication in the Concrete Repair Bulletin, please contact ICRI for more details and for a copy of our Publication Guidelines: (651) 366-6095 | www.icri.org

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Rehabilitation of the Historic Richland Avenue Bridge BY WILLIAM VERMES

Over time, the bridge became a local landmark to both residents and OU alumni. For decades, students walked across the bridge on its sidewalks with exposed aggregate railings and posts. As one alum said,“I remember walking up the bridge during the day and stumbling down it at night."

Fig. 1: 1930s post card of the South Br idge, now the Richland Avenue Bridge

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he Richland Avenue Bridge, opened in May 1932, originally spanned the Hocking River and the B&O Railroad, connecting Uptown Athens and the upper Ohio University (OU) campus to the lower OU campus, and the city’s outskirts to the south (Fig. 1). When the Hocking River was relocated almost 40 years later to reduce flooding, Oxbow Trail (a local access road), Oxbow Creek, and green space replaced the riverbed below the bridge. The Richland Avenue Bridge is a four-span, 288 ft (88 m) long steel deck girder structure on reinforced concrete wall abutments and piers, with span lengths of 64 ft (20 m), 80 ft (24 m), 80 ft (24 m) and 64 ft (20 m). The bridge carries two lanes of traffic on a 36 ft (11 m) wide roadway with two 7 ft (2.1 m) wide sidewalks. The Richland Avenue Bridge is one of the earliest known examples of continuous steel girder design in existence. Furthermore,the bridge is the design of noted Ohio bridge engineer D. H.“Henry” Overman, and contains many of his signature architectural features. Henry Overman was a prominent bridge engineer in the Ohio Department of Highways (ODH) Bridge Bureau from 1925 to 1963. In terms of Ohio’s bridge construction, he is considered a master builder for his numerous well-known aesthetic ODH concrete arch designs, many now regarded as either eligible for or have been placed on the National Register of Historic Places. The Richland Avenue Bridge contains many classic Overman features: the concrete encasement of the fascia girders providing visual continuity across the structure; the exposed aggregate concrete finish through the railings and posts (Fig. 2); the ascending hierarchy of concrete railings, intermediate posts, pier posts, and abutment posts; abutment chevrons; horizontal pier grooves; and rounded arched openings in the wall piers. 28



During the bridge’s first 80 years of service, it had received only one minor rehabilitation consisting of replacement of the wearing surface, expansion joints, and select end floor beams. By 2009, the bridge’s structural capacity was limited to 60% of Ohio Legal Loads due to the design of its reinforced concrete deck and the additional wearing surface. An engineering study recommended that the concrete deck be replaced with new railings meeting current vehicular impact loads along with contemporary vandal-protection fencing. Both abutment walls, heavily deteriorated due to the leaking expansion joints above, were also to be repaired. The bridge owner, city of Athens, initiated a rehabilitation program for the Richland Avenue Bridge in 2012. The project was to follow a strict construction time frame allowing a 66-day closure of the bridge between OU’s Spring Commencement in June and Move-In Week later in August. The city of Athens also expressed two unique requests: First, knowing that the bridge was special to the community, the city wanted the rehabilitated structure to retain the appearance of its original construction in anticipation of a future National Register nomination. Second, the city requested that reuse of the distinct concrete railings elsewhere in the city be investigated.

Preserving The Bridge’s Architecture Replacement of a reinforced concrete deck is relatively easy. However, in the past, all concrete components, including railings, have been

Fig. 2: Typical original exposed aggregate concrete railing before rehabilitation

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demolished along with the original deck regardless of condition. Following the field inspection of the bridge, the Preliminary Engineering Report cited that the concrete railings were in good condition because the 3 in (76 mm) high wind slots had reduced snow and water accumulation along the sidewalk. With the weight of the railings and the posts angled to match the 6% grade of the bridge, reuse of the railings off the bridge appeared impractical. Thus, the reuse of the railings and intermediate posts on the rehabilitated structure was the preferred placement for these components. The original railings did not satisfy current vehicle impact loads. The chosen remedy for this was to design a 1 ft (0.3 m) wide, two-part interior railing along the vehicular side of the sidewalk (Fig. 3). The lower 28 in (711 mm) solid cast-in-place base Fig. 3: Vehicular/pedestrian interior railing section (note that the vehicular railing section is provides vehicular crash protection while the upper highlighted in yellow, and the pedestrian railing section is in green) precast panel with open windows provides additional separation, keeping pedestrians from entering the roadway. The upper precast panels also featured open windows and Contract Complications an exposed aggregate finish closely matching that of the reused Complications arose in March 2012 during the bidding phase. The exterior railings (Fig. 4). Precast intermediate, pier and abutment low bid among only two bidders was $3.5 million, well above the posts were designed to set on top of the interior railings in line with $3.0 million construction budget. Reinstallation of the original railing the corresponding original exterior posts. represented one of two work items that contractors balked at (the other issue was the schedule for fabrication of two full size neopreneRemoval notes and stainless steel anchorages were developed to molds for a late addition of abutment wall murals). One contractor reattach the railings and intermediate posts to the new sidewalk in a stated he intended to provide new concrete railings, believing damage manner requiring little additional labor, with countersunk adhesive to the original railings was unavoidable. anchors upward into the railing post and threaded adhesive anchors downward into the new deck. The reuse of concrete railings on a With the bids rejected, rebidding was set for May 31 with two bridge is a construction procedure likely never attempted before. significant changes: Due to the size, weight and condition of the pier and abutments posts, these components were set to be replaced in kind. The color and texture of the new post’s exposed aggregate finish would closely match that of the original railing by following specifications established by the Cast Stone Institute. The approach span railings and posts, attached to the abutment walls and not on a deck to be removed, would remain in place with the contractor working around them.

1. 2.

The construction would occur in the Summer 2013, with an expanded 90-day closure period between Commencement and Fall Move-In. A precast exterior railing alternate,with storage of the original railings, was added.

In Span 4 only, concrete shotcrete was sprayed on all interior steel surfaces to protect the steel from the corrosive gasses of the steam locomotives that once passed below. The shotcrete, still blackened by decades of locomotive soot, was kept in-place though the contractor was permitted to remove the shotcrete neatly and only in narrow strips where added web stiffeners or deck form anchors were required. Fig. 4: Typical interior pedestrian railing panel elevation

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With these changes,satisfactory bids were received,with a submitted low bid of $3,087,000. Alternate 1-A, the installation of new precast concrete exterior railings, was the lower cost option compared to reuse of the original railings. However, during the preliminary work for the rehabilitation, the city of Athens selected Alternate 1-B, reinstallation of the original concrete railings, even with the added cost of $17,000. The railings and intermediate posts would be reinstalled!

Preserved Bridge Architecture

Fig. 5: Exterior railing is cut free at bottom of pedestal

Fig. 6: Exterior railing panels stacked for reinstallation

With the decision to reuse the original railings, concrete saws were used to cut the railings and intermediate posts at the bases (Fig. 5), lift the panels and posts via straps and cranes, and stack the labeled components while they awaited reinstallation (Fig. 6). During this time, the repair of small spalls and installation of the stainless steel anchor plates was also performed. Once the deck and sidewalk were placed, the original exterior railing, now precast components , were set in-place and anchored (Fig. 7). While the railings were awaiting their new deck, it was observed that the pedestal reinforcement was not always in the location stated in the original plans. With this,the anchor bolt layout in the railing pedestals was redesigned from a four-anchor pattern, one in each corner, to a diamond pattern, and ultimately only two anchors placed on the transverse centerline. The applied live loads were appropriate wind loads and a 1000 lb (1 kip) “incidental” pedestrian load. The result is that as pedestrians or motorists cross the bridge, they now see the new interior railings and the original exterior railings in visual harmony (Fig. 8). Once the railings were reinstalled, repair of spalls was performed, and again, with a concrete mix closely matching the original color and exposed aggregate texture (Fig. 9). Lastly, a light power washing of the original concrete removed decades of attached dirt, thus revealing the original color of the assorted small aggregate.

Additional Concrete Repairs

Fig. 7: Reinstalled exterior railing panels and posts

Most deteriorated concrete surfaces were located on the abutment walls and along the lower portions of the concrete fascia encasement. To prevent the “ring of corrosion” phenomena and to ensure longlasting repairs, passive cathodic protection strips were attached to the steel reinforcement before placement of the new concrete (Fig. 10). The Ohio Department of Transportation (ODOT) concrete sealing policies at the time called for a thick epoxy-urethane sealer to prevent water and salt penetration in the concrete. While effective, use of this type of sealer also would conceal the exposed aggregate finish of the railings and form lines throughout the structure. Instead, a silane sealer with a graffiti protection coating was specified in areas subject to graffiti (Fig. 11). Incidentally, no concrete sealer was applied to the exposed aggregate surfaces of the railing above, thus keeping the color of the exposed aggregate visible.

Conclusion

Fig. 8: New interior precast railing panel and post in front of origina l exterior railing

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The Richland Avenue Bridge is not only a restored local landmark, but also one that is now properly recognized as eligible for the National Register of Historic Places (Fig. 12). The rehabilitation project has received four statewide awards, including the 2014 Ohio Historic

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Preservation Office Merit Award and the 2014 FHWA (Federal Highway Administration)/ODOT Historic Bridge Preservation Award. During a site visit of the rehabilitated bridge,an Ohio Historic Preservation Office staff member exclaimed, “Athens needs this bridge, and this bridge needs these railings!” Since the reopening of the Richland Avenue Bridge, four incoming freshmen classes now have walked over and under the city of Athens’ and Ohio University’s bridge. They may not realize the historic nature of the bridge, but most have, or soon will gain, a subtle appreciation for the bridge that looks like it has been there forever, just like the Ohio University students before them. � Fig. 12: The renewed Richland Avenue Bridge, 2014

Richland Avenue Bridge Rehabilitation Athens, Ohio

OWNER Engineering & Public Works, City of Athens, Ohio ENGINEER/ARCHITECT Pennoni (formerly Jones-Stuckey) Columbus and Akron, Ohio CONTRACTOR Shelly & Sands Zanesville, Ohio Fig. 9: Matching texture of exterior railing repair (between arrows)

Fig. 10: Application of cathodic protection at south abutment wall

MATERIAL SUPPLIER BAXTER PRECAST Fairfield, Ohio

William “Bill” J. Vermes is a senior bridge engineer with Pennoni's Akron, Ohio, office. He graduated from Cleveland State University with a Bachelor's and Master's degree in Civil Engineering. He has over 30 years of experience for both major and minor bridge inspection in 10 states, and he specializes in bridge rehabilitation. Bill has authored several papers discussing past bridge construction practices covering concrete, steel and stone bridge construction, and is co-author of “Cleveland's Historic Bridges: Architectural and Engineering Masterpieces.” Vermes is also a member of the International Concrete Repair Institute (ICRI), American Society of Civil Engineers (ASCE), the Association for Bridge Construction and Design (ABCD), and the Society for Industrial Archeology (SIA).

ICRI is Hiring! ICRI Certification Product Manager Fig. 11: Silane sealer with graffiti protection coating keeps original pier form lines visible

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(New Position Description) See page 63.



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D N A

S p o n so r E O p p a nd xh ib or tu S t i ll ni ti e it A v a s i l ab l e !

15 Technical Presentations •

Retrofitted Structural Resilience of Wellington Harbor Buildings After the M7.8 Kaikoura Earthquake

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Practical Use and Results of Pulse-Echo Ultrasonic Tomography Before and After Epoxy Injection of Honeycombs

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Damage Assessment of Reinforced Concrete Offshore Structures

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Condition Inspection of Marine Structures

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Inspection and Assess: Prioritizing Marine Infrastructure Through Asset Management

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Assessment and Rehabilitation of Wharf Structures in the Houston Ship Channel

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Back to the Beginning: Natural Cement Use in Historic Canal Restoration

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Advancements in Galvanic Cathodic Protection Jackets for Marine Structures

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Chemical Grouting of Leaking Joints in the Weber Coulee Siphon

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Cathodic Protection of Reinforced Concrete Maritime Structures

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Underwater Pile Repairs Using Stay-in-Place Fiberglass Forms

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Solutions for the Repair and Protection of Marine Structures

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Prevention and Repair of Problems Related to Corrosion in Marine Environments

Special Session on Vision 2020

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Underwater Seepage Crack Repair Using Polymeric Repair Material Field Demonstration

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Thin Vertical SCC Repair at New Auxiliary Spillway Control Structure

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T E C H

PLUS…

Overview of Vision 2020 Industry-Wide Cooperation Sustainability Recruitment of Professionals Improving Project Relationships Repair Code Adoption

Vision 2020 Breakout Sessions • •

Night Out at the Bayou Barn! Friday, November 17

Industry Cooperation and Recruitment Project Relationships and Branding & Promotion

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n 25th Annual ICRI Project Awards Red Carpet/Ceremony/Reception Thursday, November 16, 2017

Contacts, education, knowledge and experience… “ all found in one place.

Schedule-at-a-Glance WEDNESDAY, NOVEMBER 15 7:30 am – 12:00 pm Tabletop Exhibits 8:30 am – 12:00 pm Technical Session 6:00 pm – 6:30 pm First-Time Attendee Reception 6:30 pm – 8:00 pm Welcome Reception THURSDAY, NOVEMBER 16 7:00 am – 12:00 pm Committee Meetings 7:30 am – 5:30 pm Tabletop Exhibits 8:30 am – 12:00 pm Technical Session 12:00 pm – 1:30 pm Luncheon and General Session 1:30 pm – 5:30 pm Committee Meetings 1:30 pm – 5:00 pm Technical Session 6:00 pm – 10:00 pm 25th Annual ICRI Project Awards FRIDAY, NOVEMBER 17 7:30 am – 10:30 am 8:00 am – 12:00 pm 8:30 am – 12:00 pm 12:00 pm – 1:30 pm 12:30 pm – 5:30 pm 1:30 pm – 3:30 pm 6:00 pm – 9:30 pm

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EXHIBIT / SPONSOR OPPORTUNITIES STILL AVAILABLE

COMMITTEE MEETINGS WHERE ICRI WORK GETS DONE—ALL ARE WELCOME

EARLY REGISTRATION DISCOUNTS! REGISTER BY SEPTEMBER 18 FOR THE BEST DISCOUNTS!

SPECIAL HOTEL RATE! STAY AT THE HYATT REGENCY NEW ORLEANS AND SUPPORT ICRI—BOOK BY OCTOBER 23 FOR ICRI RATES

Tabletop Exhibits Committee Meetings Special Vision 2020 Session Networking and Chapter Luncheons Committee Meetings Vision 2020 Breakout Sessions Night Out at the Bayou Barn!

Host Hotel Hyatt Regency New Orleans 601 Loyola Avenue New Orleans, Louisiana 44114

2017ICRIFALLCONVENTION November 15-17 | New Orleans

Silver Jubilee Bridge: A 25-Year Concrete Repair Strategy BY PAUL LAMBERT

Fig. 1: Silver Jubilee Bridge, view from Runcorn side of River Mersey

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he Silver Jubilee Bridge in Runcorn, UK,owned by the Cheshire County Council/Halton Borough Council, was constructed in the late 1950s and early 1960s.1 Locally, it has gained an iconic stature and has been featured widely in the UK media. Originally known as the Runcorn-Widnes Bridge, its name was changed to celebrate the Queen’s Silver Jubilee in 1977 (Fig. 1).The bridge forms part of a major highway route in North West England that carries over 90,000 vehicles per day on four lanes. The central span of the bridge is a 1083 ft (330 m) long steel arch structure with two 249 ft (76 m) side spans (Fig. 2).When constructed, it was the third longest span steel arch bridge in the world. The approach spans are a total of 1713 ft (522 m) in length. Although the deck of the approach viaducts is waterproofed and has not degraded significantly, there are joints over every third pier that have failed with time, allowing chloride-contaminated water from 34



de-icing salts to leak onto the substructure. Chlorides have penetrated the concrete cover, and levels at the reinforcement have reached 2% by mass of cement, more than sufficient to induce and sustain corrosion. Despite its relatively young age, the bridge was given Historic England Grade II listed status2 in March 1988 because the structure is of “special interest, warranting every effort to preserve it.” The status as a listed structure imposes certain restrictions. First, a listed building may not be demolished, extended or altered without special permission from the local planning authority.The second restriction results from the importance of the bridge as a major highway link. A closure would result in a diversion of at least 40 miles (64 km). Partial closure would result in heavy congestion combined with undesirable night work next to live traffic. Due to the lane width, traffic management with the current volume of traffic is difficult and inevitably disruptive.

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Fig. 2: Schematic representation of Silver Jubilee Bridge main span

Degradation Mechanisms Every pier in the original approach viaducts that was located under a movement joint was exhibiting significant signs of degradation associated with chloride induced corrosion of the reinforcement. In addition, the beam ends and adjacent edges of the deck also suffered extensive chloride contamination and corrosion. The steel bearings were heavily corroded so that the designed free movement between upper and lower plates was impeded or prevented. During the 1980s, many of the encapsulated piers started to exhibit classic signs of degradation due to alkali aggregate reaction (AAR).

Holding Repairs (1992) In 1992, the first priority was to ensure public safety. While reinforcement section loss was not significant enough to warrant structural concerns, the public were at risk from falling delaminating concrete. Since public access under the approach viaducts had to be maintained, a series of holding repairs were implemented instead of conventional repairs. This involved removing loose and delaminated concrete and applying a polymer modified cementitious mortar coating to the areas exposed, to minimize any further corrosion of the reinforcement and to prevent significant further ingress of contaminants. As an extra measure, the coating contained a corrosion inhibitor.

The holding repairs were subject to a nationwide research project on the effectiveness of repairs in 2003. 3 This study found that although some of the repairs had discoloured and the surface of the coating had begun to degrade, the holding repairs were performing adequately and had prevented significant reinforcement section loss from occurring after 10 years.

Cathodic Protection (1993 onwards) Starting in 1993 during the process of implementing holding repairs, an overall repair strategy was developed that centered around the use of cathodic protection (CP).4 This strategy was identified as the most economical solution for addressing the corrosion of reinforcement in chloride contaminated concrete and greatly reduces the amount of concrete removal required. The first contract for installation was awarded in 1993, and utilized a titanium mesh and sprayed concrete overlay system for the piers and beam ends in the two areas in the poorest condition. This was the first full scale use of this system in the UK on a highway structure (Fig. 3a and 3b). Since then, several further systems have been installed, completing the protection of a majority of the substructure. Most recently, a galvanic system trial has been successfully performed for use on precast, pre-stressed beams suffering from chloride induced corrosion.5

(a) Prior to repair (circa 1995)

(b) 20 years after repair

Fig. 3: Approach viaduct pier located beneath deck joint

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Electrochemical Osmosis (2001) The original structure was designed to carry one lane of traffic in each direction, plus a shared center lane for overtaking. In 1977, the bridge was widened to form two lanes running in both directions. This necessitated the widening of the approach viaducts by increasing the number of deck beams.Wherever possible, the additional beams were supported off the existing piers which were widened by encapsulating the stem and crosshead. The gap contained a fiberboard material to ensure separation between the new and the old piers. Unfortunately, the new concrete was susceptible to AAR, exacerbated by the water retained in the separation gap by the fiberboard, leading to extensive cracking. The development of electrochemical osmosis for concrete provided the possibility to control both the AAR in the encapsulated piers and the corrosion risks to the inner pier associated with any attempts to control moisture (Fig. 4). Electrochemical osmosis is a technique that can reduce relative humidity (RH) in concrete by the application of low voltage direct current (DC) pulses. Below a certain level of humidity, which depends on the concentration of aggressive species, corrosion will not occur. In concrete, this has been shown to be 60 – 70% RH. AAR is unlikely to occur below 85% RH. 6 As well as reducing the moisture content, the system is designed to provide a cathodic pulse to the reinforcement. This pulse results in the steel experiencing a low level of CP which reduces the risk of corrosion.

Discrete anodes could be installed by roped access, but would require drilling holes into the deck to significant depths. If the holes were drilled marginally too deep, there was a risk of drilling into live traffic. A galvanic system as previously installed in combined systems would fall under the same restriction. What was needed was an effective and sympathetic system that could provide the required protection to preserve the structure, minimize disruptions, and avoid significant alteration to the appearance of the bridge. To fulfill these requirements, it was necessary to find an appropriate compromise which was identified as an anode system that could be securely surface mounted without the need for extensive breakout, surface preparation, or drilling. After considerable research,a cassette system originally designed for installation on jetties and harbors was identified as showing promise. The anodes sit in a fiberglass foam-filled glass reinforced polymer (GRP) tray which can be mounted on a concrete surface using sleeved bolts (Fig. 5). In the environment of jetties and harbors, the foam never dries out as it is wetted by the tide and on the bridge this would not happen. Moisture is necessary to act as an ionic transport medium for the current to the protected reinforcement.

Fig. 5: Cassette system installed on deck soffit

Fig. 4: Electrochemical osmosis system on encapsulated pier

Although successful, the difficulties in obtaining a reliable and competitive supply of such systems meant that when a similar pier was treated on the other side of the bridge, the decision was made to use a combination of galvanic anodes and a reinforced coating.

Suspended Deck CP (2008-2010) The heavily chloride contaminated bridge deck was the last major element to be protected. There were limitations in respect of the suitability and accessibility, in addition to the restrictions imposed by the Grade II listed status and the possible disruption to the local economy. The bridge deck is 131 ft (40 m) above the River Mersey and the Manchester Ship Canal and traffic management is restricted. A mesh and overlay system would certainly be able to provide the current, but the vibrations in the deck caused by traffic would mean there was a risk that the sprayed concrete overlay could debond. 36



Further refinements were made to the cassette system based on the requirement to protect a bridge deck 131 ft (40 m) above water level. This resulted in the development of a calcium nitrate based impregnation for the glass fiber foam which is able to retain moisture simply by being in contact with the atmosphere. The various authorities accepted the proposal of a trial installation on a 197 ft (60m) section of the bridge deck. Cassettes were installed at 20 in (500 mm) centers, which based on past experience, is considered to be the maximum allowable spacing for the anodes. The monitoring data from the initial 12 months showed the trial section was performing as designed,and the remaining 919 ft (280 m) of the deck was protected with the same system, the final section being energized in December 2010.7,8 The cassettes are visible but the view from underneath the bridge is dominated by the steel work as seen in Figure 6.

Conclusions The restrictions imposed by the listing of the Silver Jubilee Bridge have proved to be an effective incentive in the development of innovative and sympathetic remediation techniques. The low levels

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of intrusion typically associated with such techniques often means they have also offered sustainable and environmentally friendly alternatives to conventional repair. This has been recognized by the award of several national and international prizes for both sustainability and longevity of repairs. Electrochemical remediation techniques have played a major role in providing long-term solutions to problems of chloride-induced reinforcement corrosion. Alternative repair technologies such as corrosion inhibitors and electro-osmosis have also been introduced for specific applications where cathodic protection was considered inappropriate or impractical. The experience at the Silver Jubilee Bridge demonstrates the technical and commercial advantages that can be obtained through the co-operation of owner and engineer leading to the considered application of new technologies in the maintenance of major civil structures. � References

1. Anderson, J.K., Runcorn-Widnes Bridge, Proceedings of the Institution of Civil Engineers , Volume 29, 1964, pp. 535-570 plus plates. 2. https://historicengland.org.uk/listing/the-list/listentry/1130421. 3. Baldwin, N.J.R. & King, E.S., Field Studies of the Effectiveness of Concrete Repairs , Phase 4 Report: Analysis of the Effectiveness of Concrete Repairs and Project Findings, Research Report 186, Health and Safety Executive, Sudbury, UK, 2003. 4. Lambert, P. & Atkins, C., Maintaining the Silver Jubilee Bridge – Cathodic Protection for a Critical Causeway , Concrete International, V. 29, No. 5, May 2007. 5. Brueckner, R., Atkins, C. & Lambert, P., Life Extension of Prestressed Beams Using Cathodic Protection , 6th International Conference on Bridge Maintenance, Safety, Management and Life Extension, IABMAS, Lake Como, Italy, July 2012, pp 2814 – 2819. 6. Lambert, P., Controlling Moisture , Construction Repair: Concrete Repairs 6, March/April 1997, pp 29-32. 7. Brueckner, R. & Lambert, P., Renovation of the Deck of a Major Listed Bridge Structure , STREMAH 2011 – Structural Studies, Repairs and Maintenance of Heritage Architecture XII, Chianciano Terme, Tuscany, Italy, WIT Press, Southampton, September 2011, pp. 307-317.

Fig. 6: Installed CP deck cassettes

Paul Lambert is Head of Materials and Corrosion

Technology for Mott MacDonald, based in Altrincham near Manchester, United Kingdom. He has over 30 years of experience in the investigation of structural durability and degradation and in the development of novel remedial techniques for many types of structures. His team is internationally recognized for their work on cathodic protection design and service life prediction through numerical modelling. Paul is Visiting Professor at the Centre for Infrastructure Management at Sheffield Hallam University where he carries out research into novel materials, protective coatings, and repair technologies. He is a Fellow of the Institute of Materials, Minerals and Mining; a Fellow and Past President of the Institute of Corrosion; a Chartered Materials Engineer; a Chartered Corrosion Scientist; and a NACE Certified Corrosion Specialist. Paul is also a member of ICRI.

& o r s n o S p x h i b i t it e s E t u n i p o r O p N o w b l e i l a A v a

8. Atkins, C., Brueckner, R., Lambert, P. & Bennett, M., Field Experience of Remote Monitored and Controlled CP Systems , Concrete Solutions 5th International Conference on Concrete Repair, Queen’s University, Belfast, September 2014, pp 42-47.

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37

LEGALINSIGHT This Isn’t Kansas Anymore: OSHA’s Effort to Limit Dust Exposure and Its Willingness to Fork out Significant Penalties for Non-Compliance BY MATTHEW J. PAVLIDES AND JUSTIN C. ELLER, MILES & STOCKBRIDGE

Unless someone has been living in a vacuum (pardon the dustrelated pun), OSHA’s effort to address respirable crystalline silica has been something widely anticipated and prepared for by many in the industry. It is common knowledge that OSHA has a fundamental mandate to have all employers provide employees with a workplace free from recognized hazards that are causing or likely to cause death or serious physical harm. Employees exposed to respirable crystalline silica have been determined to be at increased risk of developing serious adverse health effects, including silicosis, lung cancer, chronic obstructive pulmonary disease and kidney disease.

OSHA’s Crystalline Silica Standard In order to address these health hazards, OSHA has issued a construction standard for crystalline silica that establishes a new permissible-exposure limit and requires employers to take a number of steps, including: • Implementing a written exposure-control plan; • Designating a competent person to implement the exposure-control plan; • Restricting housekeeping practices that expose workers to silica where feasible alternatives are available; • Offering certain medical exams for workers who are required by the standard to wear a respirator for 30 or more days per year; • raining workers on work operations that result in silica exposure and ways to limit exposure; and

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• Maintaining records of workers’ silica exposure and medical exams. OSHA has decided to delay its enforcement of the crystalline silica standard until September 23, 2017, in order to conduct additional outreach and provide educational materials and guidance for employers. In the meantime, the agency will continue to regulate exposure to silica through its other standards (e.g., respiratory protection).

OSHA’s New Penalty Structure While OSHA views itself as a source of education, information and enforcement, it has limited resources. Among the most limited of its resources is the number of enforcement officers nationwide—roughly 2,000 or so. Given its limited enforcement resources, OSHA shifted to an enforcement strategy of making an example of its inspections and citations while dramatically increasing its penalties. How dramatic? Te maximum penalty for a violation classified as “other than serious” or “serious” has increased from $7,000 to $12,471, while the maximum penalty for repeat and willful violations has increased from $70,000 to $124,471—increases of more than 75%.

Recent Case Example For those who think OSHA isn’t serious, look no further than a recent citation issued on May 19, 2017, in South Carolina to a contractor whose employees were using pneumatic tools to

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remove delaminated concrete under a pier. Te cited and notified penalties were: $8,149 for non-use of appropriate respirators; $8,149 for lack of a qualified program administrator to oversee the use of respiratory protection, lack of hazard evaluation and reasonable estimates of employee exposures, and failure to conduct air monitoring; $8,149 for failure of a medical evaluation to determine the employee’s ability to use a respirator, and lack of fit testing of facepieces prior to initial use and annually thereafter; $8,149 for not cleaning and disinfecting respirators; $8,149 for lack of training of employees who were required to wear respirator protection; and other proposed penalties, in the end, totaling up to just over $55,000. Many of these citations were deemed to be in the category of “serious,” which by OSHA’s classification are hazards with a substantial probability of causing death or serious physical harm.

create any attorney-client relationship. Te opinions expressed and any legal positions asserted in the article are those of the author and do not ne cessarily reflect the opinions or positions of Miles & Stockbridge, its other lawyers or Concrete Repair Bulletin. Matthew J. Pavlides is

the managing principal in Miles & Stockbridge’s Rockville, Maryland, office and a member of the law firm’s construction practice, representing owners, contractors, subcontractors, architects/engineers, sureties and vendors on their construction and personal matters.

MATTHEW J. PAVLIDES

Justin C. Eller is

While the citations and amounts may or may not be reduced by follow-up meetings and other procedures—coupled with plenty of promises to do better in the future, skillful negotiation or even the assistance of a lawyer—the impact is likely to be far reaching to a company when OSHA comes calling. And, though it is difficult to embrace change and to navigate through all of the information about controlling dust, it is the new normal. Looking forward, we have a long road ahead that will not be easily bypassed with a click of our heels. � Disclaimer: Tis is for general information and is not intended to be and should not be taken as legal advice for any particular matter. It is not intended to and does not

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a principal in the firm’s Labor, Employment, Benefits & Immigration practice in Baltimore. Justin advises and represents management in all areas of employment law, including matters before OSHA.

JUSTIN C. ELLERS

A full-service busin ess law firm, Miles & Stockbridge also has a Labor, Employment, Benefits & Immigration practice that works with employers on OSHA matters. To learn more about the firm, visit www. milesstockbridge.com.



39

STATE OF THE INSTITUTE BY MIKE LEVIN, CAE, ICRI EXECUTIVE DIRECTOR

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he International Concrete Repair Institute (ICRI) has published highlights of the annual State of the Institute Report since 2009 to provide members with information on the institute, its finances and programs. The report is used by the Board to review the financial and programmatic condition of the Institute and for strategic planning.

ICRI educates and provides information and direction “toward the future of the concrete repair industry. After over 24 years of participation, ICRI continues to make a professional and personal positive impact in my life.

”

Scott Harrison, Construction Insight, Inc.

Since the last report, ICRI continued to implement new programs and changes which will carry over into future years and provide new member benefits for many years to come. New programs and projects are only approved if they fit into the ICRI mission and strategic plan (Fig. 1).

Members Say It Best ICRI continues as the only organization solely dedicated to the concrete restoration industry and exists for one reason - to serve its members and the restoration industry.The best way to evaluate if the organization is serving its members is to ask them. Figure 2 provides two testimonials that reflect how the association is meeting member needs.

Finances Remain as Strong as Concrete! ICRI continues to be on solid financial foundation. The American Society of Association Executives (ASAE) recommends a benchmark goal of six months operating cash in the bank. ICRI ended FY16-17 on target. The cash reserves provide the board with the option to

“ ICRI is on the move and it’s picking up speed! ”

Jeff Barnes, Barnes Consulting Group

Fig. 2: Testimonials

invest in new programs, such as ICRI’s Concrete Surface Repair Technician Certification Program, a new and enhanced presence at the World of Concrete, and activities to benefit members. The board and staff also managed the finances to create the first budget surplus in the last five years. Another important benchmark for membership organizations is to generate a minimum of 50% of their revenue from sources other than membership dues. Through concerted efforts to increase non-dues revenue, at the end of FY16-17, ICRI dues accounted for only 40% of the total revenue, accomplishing that goal. The charts in figures 3-6 illustrate how the revenue and expenses were distributed in FY16-17.

Membership Hits Record Levels ICRI’s total membership continues to grow, surpassing 2,600 members worldwide—a record high for the organization. More indicative than this 9% growth is ICRI’s membership retention rate —a robust 92%, which is above association industry standards (Fig. 7).

New Project Ideas Flowing into Secretariats Introduced last year, one of the most exciting elements to emerge from the strategic plan is the creation of a process to encourage new ideas for projects and programs. The new structure is an integral part of the strategic plan. At the time this article was submitted, twenty new ideas have been approved to become “Initiatives”which will now be developed by committees and staff. Anyone with an idea for an ICRI program should submit the IDEA form available on the ICRI website. See the article in this issue (pg. 10) for a chart on how the process works.

Fig. 1: Strategic Plan

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Fig. 3: Cash Trends Fig. 4: Net Income Trend Line

Fig. 5: 2016-2017 Revenue

Technical Programs Are the Primary Focus of ICRI Members of the various ICRI Technical Committees were hard at work again during the last year. Highlights of their accomplishments include: • published Guide Specifications for Externally Bonded FRP Systems (330.2); • published a joint ACI/ICRI Guide to the ACI 562 Repair Code; • submitted for publishing the Updated Guide for Selecting and Specifying Materials for Repair (320.2R) and New Guide for Use of Penetrating Surface Treatments for Corrosion Mitigation (510.2); and • started development of two new educational products—pull-off testing webinar (Committee 210) and crack identification training (Committee 320).

Fig. 6: 2016-2017 Expenses

A new FRP Inspector Certification Program started development (Committee 330). A new, full-time Certification Product Manager Position was created to promote and maintain existing and future certification programs. Last year, ICRI conducted Concrete Slab Moisture Testing (CSMT) WWW.ICRI.ORG

Fig. 7: Membership



41

certification classes in Baltimore, Cleveland, New Jersey, and Chicago, at the National Wood Flooring Association Expo in Charlotte, NC, at World of Concrete, The International Surface Event West in Las Vegas, NV, and one in-house class. Overall, a total of 90 individuals were certified or recertified. ICRI introduced a new software tool to assist with management of technical activities. The new platform allows secure collaboration for the ICRI, including balloting, document repositories for file sharing, email distribution lists, discussion boards, calendars, wikis, polls, and more. Plans are to add the administrative committees in the future.

New Surface Repair Technician Certification Program Launched to Boost Member’s Skills and Expertise Building on the success of the Concrete Slab Moisture Testing (CSMT) Program, the new Concrete Surface Repair Technician Certification (CSRT) was launched. Completion of this new online course will qualify individuals as an inspector on repair projects according to the new ACI 562-16 - “Code Requirements for Evaluation, Repair, and Rehabilitation of Concrete Buildings.”

Chapters Build Relationships and Learning A new chapter in Toronto, Canada,was chartered since the last report. ICRI now has 38 chapters in North America, including two student chapters. Located in metropolitan areas, the chapters hold regular meetings and social events throughout the year. Chapter meetings this past year included technical presentations, educational meetings, symposiums, and local conventions on repair-related topics for the benefit of members, as well as many social events. Two Regional Chapter Roundtable programs were conducted and continued to provide chapter leaders with valuable tools, resources and networking opportunities to grow their membership and improve the quality of the services ICRI provides to members. Led by President Michelle Nobel, the Florida West Coast Chapter was named “Chapter of the Year” at the annual Spring Convention, while the Rocky Mountain Chapter garnered the “Most Improved Chapter” award. Twenty-one chapters received “Awards for Outstanding Achievement,” and the New England Chapter, led by President Todd Neal, was recognized with an “Excellent Chapter” award.

ICRI and ACI Sign Memorandum of Understanding Throughout the years, ICRI has partnered with other concrete related organizations in the spirit of cooperation, education, and sharing information for the good of the entire industry. The strategic plan calls for new and increased partnerships and significant progress continues toward collaborative efforts with allied organizations. That important effort was highlighted recently by a formal Memorandum of Understanding (MOU) with the American Concrete Institute. The MOU recognizes ACI as the organization with primary responsibility to develop codes, standards, and specifications in mandatory language, as well as guide specifications, guides and reports in non-mandatory language, in the areas of concrete materials, design, construction, and repair. And it recognizes ICRI as the organization with primary responsibility to develop guide specifications in nonmandatory language, documents and guidelines in the areas of field

42



procedures and practices for concrete repair, maintenance, and protection. ICRI now has formal partnerships with 11 related organizations.The list can be found on the website.These partnerships provide additional resources to ICRI members.

Great Networking and Education at ICRI Conventions even with Blizzard Members of the industry gathered in large numbers in Cleveland, Ohio, at the 2016 Fall Convention and in Montreal, Canada, at the 2017 Spring Convention. Attendees learned from a variety of technical speakers, cheered their peers as their outstanding work received recognition at the awards program, and networked with fellow members of the industry who they may never have met except at an ICRI convention. The Spring Convention in Montreal had an added feature of blizzard conditions, yet most of the registered attendees know the importance of the conventions and were able to persevere the travel conditions and participate. Chapters continue to fill an important role at ICRI conventions. At the Fall 2016 convention in Cleveland, the Northern Ohio Chapter hosted the Corner Alley VIP Bowling event and the Rock and Roll Hall of Fame evening. The Quebec Province Chapter hosted a Curling Tournament and a special Red Carpet Dinner at the Spring 2017 convention in Montreal.

Members Recognized as Fellows and Distinguished Service Being named an ICRI Fellow is recognition of someone who has made many noteworthy contributions to ICRI and the concrete repair industry in general. Jacques Bertrand and George Reedy were elevated to Fellows of the Institute at the Spring Convention. Acknowledging and recognizing significant contributions that have helped advance the overall mission of the institute is one of the mandated responsibilities of the ICRI Fellows Committee. 2016 Distinguished Service Awards were presented to Chris Lippmann for his extraordinary efforts on the Strategic Implementation Committee, and to Jim McDonald. for his many years of service and dedication to ICRI and ICRI TAC. None of the above would have been possible without the leadership of those dedicated individuals who have served over the years as board and committee members. ICRI is grateful to have many talented individuals who helped to make the institute what it is today and plant the seeds for future growth. I welcome and encourage you to let me know how you think ICRI can continue to serve its members and the concrete repair industry. Please reach out to me at [email protected].

Mike Levin, CAE ICRI Executive Director

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CONCRETE REPAIR CALENDAR SEPTEMBER 27-28, 2017

ICRI Concrete Slab Moisture Testing Certification STRUCTURAL Facility Columbia, MD Website: www.icri.org

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OCTOBER 3-4, 2017

ICRI Concrete Slab Moisture Testing Certification Polished Concrete University Facility Pompano Beach, FL Website: www.icri.org NOVEMBER 7-8, 2017

ICRI Concrete Slab Moisture Testing Certification Arapahoe County Fairgrounds Aurora, CO Website: www.icri.org NOVEMBER 15-17, 2017

2017 ICRI Fall Convention Hyatt Regency New Orleans New Orleans, LA Website: www.icri.org JANUARY 22-26, 2018

World of Concrete Las Vegas Convention Center Las Vegas, NV Website: www.worldofconcrete.com Save money by registering through the ICRI website.

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JANUARY 24-25, 2018

ICRI Concrete Slab Moisture Testing Certification World of Concrete Las Vegas Convention Center, Las Vegas, NV Website: www.worldofconcrete.com JANUARY 30-31, 2018

ICRI Concrete Slab Moisture Testing Certification TISE West Mandalay Bay Convention Center, Las Vegas, NV Website: www.tisewest.com INTERESTED IN SEEING YOUR EVENT LISTED IN THIS CALENDAR?

Events can be emailed to [email protected]. Content for the January/February 2018 issue is due by November 1, 2017 and content for the March/April 2018 issue is due by January 2, 2018. WWW.ICRI.ORG

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INDUSTRY NEWS SIMPSON STRONG-TIE EXPANDS HABITAT FOR HUMANITY SUPPORT WITH INCREASED HABITAT STRONG SPONSORSHIP AND NEW LOCAL FUNDING Simpson Strong-ie, the industry leader in engineered structural connectors and building solutions, announced it has increased support of Habitat for Humanity’s Habitat Strong program. Simpson Strong-ie nearly doubled its monetary commitment and is now the major sponsor of the program. Habitat for Humanity homes in areas susceptible to flooding, earthquakes, hurricanes, winds and wildfires can benefit from Habitat Strong building standards, which include a suite of fortified codes and best practices for building more resilient homes. Available to all Habitat for Humanity organizations across the country, the Habitat Strong program was created to be affordable, while offering long-lasting benefits to Habitat for Humanity homeowners. Simpson Strong-ie increased its monetary donation for the program from $85,000 in 2015 to $150,000 in 2017. In addition to expanded support for Habitat Strong, Simpson Strong-ie funded a new pilot SEM playhouse build program with the local East Bay/ Silicon Valley Habitat affiliate in California. Te SEM playhouse program was created to enhance, supplement and support existing classroom learning around SEM while encouraging creativity, critical thinking, collaboration and communication. Students in grades 6-8 followed specific curriculum leading to application of their SEM learning with the building of playhouses for younger children. In March, Simp son Strong-ie participated in its largest Habitat build to date, with over 350 employees from around the world constructing new homes in a ucson, Arizona, community as part of its international sales meeting. Simpson Strong-ie has supported Habitat for Humanity for more than two 44


decades and has been a national sponsor since 2007, donating $5 million in cash and products. For more information, visit strongtie.com.

drilling into the structure from the top and feeding 24 metres of anchors in to the walls of the chimney to secure it for generations to come. Te chimney is one of the most delicate structures that Cintec have ever worked with and has required the company to design thinner connecting anchors especially for the project.

HISTORIC CHIMNEY IN BAKU WILL BE AT THE HEART OF A NEW SHOPPING COMPLEX THANKS TO THE INNOVATION OF NEWPORT FIRM CINTEC Te circular structure of the building also Cintec International is ensuring that a means that Cintec will have to use laser historic industrial chimney will be at the keyhole technology to achieve the preciheart of Te win owers Port of Baku sion necessary to successfully position the scheme. anchors. Te work is expected to take 12 weeks to complete, and the total project A demol ition -threatened historic value is estimated at around £1m. For chimney in the Azerbaijan capital of Baku more information, visit www.cintec.com. will now be the centre point of a multimillion pound new shopping complex KEY RESIN COMPANY JOINS THE thanks to the innovation of a Newport- EUCLID GROUP OF COMPANIES, based structural engineering firm. Cintec SUBSIDIARY OF RPM International has been commissioned to INTERNATIONAL carry out complex structural preservation Key Resin Company announce that it is work on the chimney later this year in a now part of Te Euclid Group,a subsidiary £1m contract. of RPM International Inc., as the latest member of its global construction Built in the 1900s the feature as the focal chemicals business. he acquisition, point of a regeneration project to establish which was finalized on July 20, 2017, will Baku as an up-and-coming center of see Key Resin Company become a central commerce and technology. part of Te Euclid Group’s resin flooring arm in North America. Tis move will Original designs for the development, enable Key Resin Company to facilitate which will be called Te win owers of new growth by leveraging complementary Port Baku, planned to have the chimney specification efforts and infrastructure in pulled down to make way for the modern both North America and across shopping complex. However, when the international markets. President of Azerbaijan saw the plans he requested that the historical chimney be Key Resin Company was founded in 1993 restored instead and become a central and has become a leading producer of feature of the development. high performance resin flooring solutions for commercial, institutional and Te result is a design which is representa- industrial markets. Te company currently tive of the futuristic vision for Azerbaijan employs approximately 50 members of whilst retaining important elements of its staff and consists of two manufacturing industrial history. sites in Cincinnati, Ohio, and Phoenix, Arizona, as well as a sales office in Cintec, which have been instrumental in Shanghai. the restoration of many of the world’s most recognizable and iconic historic Key Resin Company’s product offering structures, were an obvious choice for the includes epoxy terrazzo, decorative and job and have already begun work on industrial resinous flooring and coatings helping to preserve the chimney. as well as moisture mitigation systems, fast curing methyl methacrylate floors and Te company will be using its unique also specialty coatings that deliver benefits patented anchor to secure the chimney by such as electrostatic control properties,


WWW.ICRI.ORG

INDUSTRY NEWS chemical resistance and thermal shock resistance.

Currently, JQ is performing work for the JQ's revenue growth has averaged 19% Creekside Residence Hall at the Univer- annually over the past three years. sity of exas at Austin that will house For more information on Key Resin nearly 1,200 students and Te Live Oak About JQ: Founded in 1984, JQ provides Company visit www.keyresin.com, and for Amphitheater—a new 3,400 seat capacity structural and civil engineering, geospatial Euclid Group visit theeuclidgroup.com. outdoor music venue that will be part of and facility performance services h e Ba ck ya rd —a cr ea ti ve bu si ne ss throughout the southern United States. SIMPSON STRONG-TIE DONATES campus that combines music, entertain- Te firm is considered a leader in engiTO CLEMSON UNIVERSITY ment and technology in Bee Cave, exas. neering design innovation and technology INSTITUTE TO SUPPORT WOOD JQ is well known for its innovative engi- to support its complex, multi-state and PRODUCTS BUILDING INDUSTRY neering solutions responsive to architec- multi-market projects. Nationally, JQ has ADVANCEMENT tural design, project schedules and been recognized as a “Best Place to Work” Simpson Strong-ie, the industry leader budgets. and as a “Hot Firm” by Zweig Group. JQ in engineered structural connectors and has offices in Austin, Dallas, Fort Worth, building solutions, announces its support Said Scott, “With 30 years of engineering Houston and Lubbock. For more inforof Clemson University’s Wood Utilization experience in multiple public and private mation, visit the company’s website at: + Design Institute with a $50,000 dona- markets, we are able to deliver effective www.jqeng.com. tion. solutions for our clients’ most complex projects. Tat same experience enables us Te institute brings together foresters, to attract outstanding engineering graduarchitects, engineers and other building ates.” industry professionals to design advances in wood-based products through education and training, product research and development, and development of technical and design solutions. A representative from Simpson Strong ie will also serve on the institute’s advisory board and work with other board members to shape the direction of the institute.For more information, visit strongtie.com.

JQ ENGINEERING MOVES TO BIGGER OFFICE SPACE IN AUSTIN, TEXAS; FIRM’S GROWTH INCLUDES NEW CLIENTS, STAFF ADDITIONS JQ has relocated its Austin office to accommodate the firm’s growth in Central exas, according to JQ’s partner Tomas L. Scott, PE, LEED AP. Te new office location is 108 Wild Basin Road, Suite 350 in Austin. “We are continuing to experience strong and steady growth in the Central exas region,” said Scott. “Te move to our new offices will provide our existing team of engineers, technicians and support staff more collaborative space and allow us to accommodate our rapid growth in Austin.”

JQ Engineering's Austin office team.

INTERESTED IN SEEING YOUR NEWS IN THIS COLUMN? Email your industry news to [email protected]. Content for the January/February 2018 issue is due by November 1, 2017 and content for the March/April 2018 issue is due by January 2, 2018.

ICRI is Hiring! ICRI Certification Product Manager (New Position Description) See page 63.

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ASSOCIATIONNEWS GULF COOPERATION COUNCIL STANDARDIZATION ORGANIZATION SIGNS AGREEMENT WITH AMERICAN CONCRETE INSTITUTE Partnership confirms ACI Building Code Requirements for Structural Concrete (ACI 318-14) use in Bahrain, Kuwait, Oman, Qatar, Saudi Arabia, United Arab Emirates, and Yemen

First published in 1941 as the Building Code Requirements for Structural Concrete, ACI 318 provides minimum requirements for the materials, design, construction, and strength evaluation of structural concrete members and systems. Used by hundreds of thousands of concrete industry professionals since then, ACI 318 is currently available in U.S. Customary and Metric units, with versions in English, Chinese (traditional), Chinese (simplified), Korean, and Spanish. ACI 318 is included in the current International Building Code, and by more than 30 countries directly adopting or referencing its provisions.

tributors: IHS Markit; echstreet; Madcad; and BSB Edge. Visit www.concrete.org or call 248-8483800 for more details.

CONNECT AT THE CONCRETE CONVENTION AND EXPOSITION, ANAHEIM, CA, USA Highlights Include Fiber-Reinforced Polymer Concrete Symposium, Student Competitions, and Contractors’ Day

Leaders of the Gulf Cooperation Council Standardization Organization recently entered into an agreement with the American Concrete Institute to cooperate towards a better understanding and use of concrete and cementitious materials in Te rapid construction growth in the Gulf civil infrastructure. region has led to an increase in the use of ACI 318 and acknowledgement that Te agreement – signed in Doha, Qatar, by Ronald G. Burg, Executive Vice ACI’s 318 Building Code Requirements President of the American Concrete for Structural Concrete is one of the most Institute, and Dr. Nabil bin Ameen Molla, essential and valuable standards with Secretary General of the GCC Standard- respect to the design of reinforced conization Organization – provides a frame- crete structures. work for cooperation. Specifically, the agreement provides permission to utilize Additional information about the agree ACI’s Building Code Requirements for ment and the American Concrete InstiStructural Concrete (ACI 318), Specifica- tute is available on www.concrete.org. tions for Structural Concrete (ACI 301), Add iti ona l inf ormation on the Gulf and Building Code Requirements for Cooperation Council Standardization Masonry Structures (ACI 530), to Organization is available at http://www. develop a Gulf Building Code. Once the gso.org.sa/. Gulf Building Code is published in late 2019, ACI content modified to accom- ACI PARTNERS WITH NEW modate local conditions will be readily DISTRIBUTOR TO OFFER WIDER available to engineers, professors, stu- ACCESS TO THE INSTITUTE’S dents, and the governments of Bahrain, KNOWLEDGE BASE Kuwait, Oman, Qatar, Saudi Arabia, SAI Global recently became the AmerUnited Arab Emirates, and Yemen. ican Concrete Institute’s newest distribGSO and ACI have also agreed to further utor of ACI-published content. expand their technical coordination through designation of official organiza- Trough its network of distributors, ACI tional representatives at technical semi- content can be accessed digitally and onnars and symposia. GSO will encourage demand by multiple employees at the individuals involved in the concrete same time, at multiple locations worldindustry to attend ACI conventions, wide, and bundled with content from become active members of ACI commit- other publishers. raditional printed tees, and participate in ACI’s many chap- content is available also. ters in the Gulf region. ACI also plans to be more active in Gulf region activities SAI Global provides access to authoritafocused on concrete design, construction, tive information, products, and services that make it easier to manage information. and materials. he company joins existing ACI dis46



More than 2,000 engineers, architects, contractors, educators, manufacturers, and material representatives from around the world are expected to convene at the Disneyland® Hotel and Disney's Paradise Pier® Hotel, Anaheim, CA, USA, October 15-19, 2017, to collaborate on concrete codes, specifications and standards. echnical and educational sessions will provide attendees with the latest research, case studies, best practices, and the opportunity to earn Professional Development Hours (PDHs). Te Southern California Chapter of ACI are proud to host the convention this fall, as an opportunity to showcase the companies, projects, current events, and landmarks that inspired the convention theme of Making Connections. hroughout the convention, ACI will hold over 300 committee meetings, 30+ technical sessions, an industry trade exhibition, networking events, and more. Registration is open online through September 25, 2017 and discounted rates are offered until September 17, 2017. o learn more about the ACI Convention and to register, please visit www.acicon vention.org.

SLAG CEMENT ASSOCIATION LAUNCHES WEBSITE FEATURING INNOVATIVE TOOLS AND NEW SLAG CEMENT LOCATOR he Slag Cement Association (SCA) announces the launch of www.slagcement.org—its new, mobile-friendly website featuring slag cement-related tools, resources, and downloadable mate

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ASSOCIATIONNEWS rials to serve the needs of ready-mix producers, engineers, and other industry professionals. With the versatile capabilities of slag cement, the new www.slagcement.org helps the construction community understand the many different applications and benefits to the use of slag cement. Te website’s archive of diverse and visually appealing case studies and downloadable information sheets provide the evidence needed for professionals to introduce slag cement to new projects. Additionally, the site features an easy-to-use new tool that allows users to locate slag cement by state. New website features include: • Case Study Gallery—Te website features a gallery of award winning projects utilizing slag cement. Project categories include airports, bridges, stadiums, highways, soil stabilization, residential, hospitals, and buildings. Tis is a great tool for professionals seeking actual examples of slag cement use and its benefits in concrete design. • Slag Cement Locator—Te new slag cement locator tool allows users to quickly and easily find slag cement suppliers by state. Slag cement is available throughout the U.S. through SCA member companies. • Life Cycle Assessment (LCA) Calculator —Te recently released LCA Calculator is used to quantify and interpret cradle-to-gate LCA environmental impacts of ready-mixed concrete mixtures with and without slag cement. Te tool, available for free download on the SCA website, also allows users to evaluate how different concrete mixtures affect whole building impacts based on a typical case study building. Additionally, the mobile-friendly design of the new site makes it easy for users to navigate through the various tools, resources, and locator tool on a phone, tablet, or desktop computer. For updates and news on slag cement, sign up for the SCA monthly newsletter and visit the

WWW.ICRI.ORG

   

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each of five teams of students from international universities who have not previously participated in an ACI student competition.

he Slag Cement Association represents companies that produce and ship slag cement (ground granulated blast furnace slag) eams interested in applying for the travel though the USA. Te Slag Cement Associa- fund must submit their completed applition serves as the leading source of knowledge cation by September 30, 2017. ACI will for slag cement and slag blended cements announce the travel stipend recipients by through promotion, education, and tech- October 31, 2017. Registration and updated rules for the Bowling Ball Comnology development. petition will be available on January 1, 2018. o submit your application or AMERICAN CONCRETE INSTITUTE review past winners and past rules, visit ANNOUNCES $50,000 AVAILABLE TO STUDENT TEAMS the ACI Student Portal at www.concrete. h e Am er ican Co ncre te Ins ti tu te org. announced the availability of $50,000 USD for student teams from international Student Competition information can be universities to participate in the Fiber- accessed at www.concrete.org/students. Reinforced Concrete Bowling Ball Competition during the ACI Concrete Convention & Exposition in Salt Lake INTERESTED IN SEEING YOUR City, U, USA, on March 25-29, 2018.

NEWS IN THIS COLUMN?

Te objective of the Fiber-Reinforced Concrete Bowling Ball Competition is to demonstrate the effect of fibers in reinforced concrete, gain experience in forming and fabricating a concrete fiberreinforced element, and encourage creativity in engineering design and analysis. Te inaugural FRC Bowling Ball Competition was held in 2002 during the ACI Convention in Detroit, MI, USA, and has challenged student teams regularly at ACI conventions since then. ravel stipends of up to $10,000 USD will be awarded to

Email your association news to editor@icri. org. Content for the January/February 2018 issue is due by November 1, 2017 and content for the March/April 2018 issue is due by January 2, 2018.


For the best contractors, manufacturers, engineers, distributors, owners, and concrete industry professionals visit www.icri.org


47

PEOPLE ONTHEMOVE PRIME RESINS ADDS INDUSTRY VETERANS TO TECHNICAL SALES STAFF IN WEST AND SOUTHEAST Prime Resins, Inc. strengthens its regional technical sales team with the addition of Rick Broadrick and Steve Loudermilk in the West and Southeast respectively. Both bring with them a strong track record in the infrastructure repair industry.

bilitating storm and waste water pipes • Nu Flow America, an installer of CIPP linings and epoxy repairs of pipes and concrete • Advanced Drainage Systems, a manufacturer of HDPE pipe and fittings.

AMERICAN CONCRETE INSTITUTE STAFF MEMBER RECOGNIZED AS Rick Broadrick is regional technical sales consultant based in California covering RISING LEADER that state and Nevada. Broadrick brings he American Concrete Institute is with him more than 30 years’ experience pleased to announce that Lauren Mentz , in the geotechnical and ground improve- ACI’s Director of Event Services, has ment industry, most recently with Nich- been recognized as one of the “Rising olson Construction. Some of his prior Leaders for 2017” by the Michigan employers include: Condon-Johnson and Society of Association Executives Associates; GMI, a division of AVAR; (MSAE), at their annual convention, June Geo Grout Inc.; D.J. Scheffler Inc.; 10-12, in Lansing, Michigan. Winners Wagner Construction J.V. (revi Icos were chosen by the impact they've made Inc.); Raytheon Ebasco Overseas Lim- on their community and industry, as well as how they've exhibited motivation, ited; and others. forward thinking, and leadership. He worked and supervised hundreds of drilling and grouting projects, encom- Mentz received her Bachelor of Science passing all aspects of grouting. Projects degree in Hospitality and ourism Manranged from single-family residence agement from Grand Valley State Unifoundation repair projects to multi-mil- vers it y, and ob ta in ed he r Ce rtifi ed lion-dollar infrastructure jobs, including Meeting Professional (CMP) designation an emphasis on dam foundation and through the Events Industry Council. remediation work. Projects have varied in Tis designation is recognized globally as contract size from $10,000 to $20 million. the badge of excellence in the meetings, Broadrick has in-depth knowledge of in conventions, and event industry. Trough situ soil construction techniques. He also the Events Industry Council, Lauren is has been involved in developing and part of the unique community that repimplementing a company safety and resents every sector of the events industry and promotes industry standards, pracquality control program at Nicholson. tices, and ethics. Steve Loudermilk is Southeast regional technical sales consultant covering en- At ACI, Lauren directs the successful nessee, Alabama, Georgia and the Caro- development, organization, and execution linas. Loudermilk brings with him 17 of 100+ meetings, conferences, work years’ experience in technical manufac- shops, and special events for the institute, turing sales. He was with Sprayroq for including Te Concrete Convention and the last four years, where he tripled sales Exposition with nearly 2,200 registrants. in a three-year period selling spray- Lauren also works with volunteers, comapplied polyurethane products for infra- mittee members, chapter representatives, structure rehab and protection. He has a and fellow staff on meeting strategy and strong track record of growing sales and architecture. Additionally, Lauren leads creating new markets. Prior to his time the Event Services team, where she men with Sprayroq, Loudermilk handled sales tors, guides, and empowers six high performing meeting professionals. Lauren and sales management for: • Sekisui SPR Americas, which pro- has been employed with ACI since 2007. vides trenchless solutions for reha-

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49

CHAPTER MEETINGS & EVENTS ARIZONA

DELAWARE VALLEY

METRO NEW YORK

September 27, 2017

October 16, 2017

October 26, 2017

CHAPTER DINNER MEETING


CHAPTER TECHNICAL MEETING

opic: Floor esting & Inspection Speaker: Lee Eliseian Phoenix Airport Hilton, Phoenix, AZ

opic: 2nd Avenue unnel Project Maggiano’s Philadelphia Philadelphia, PA

All-Day Symposium Club 101, Park Ave., New York, NY

October 25, 2017

FLORIDA WEST COAST

September 12, 2017


September 19, 2017

CHAPTER JOINT TECHNICAL MEETING

Phoenix Airport Hilton, Phoenix, AZ

CHAPTER OUTING

MICHIGAN

With ACI Greater Michigan Chapter opic: Concrete Sweating Speaker: Rick Smith, FACI ACI Offices, Farmington Hills, MI

Baseball Game, Rays vs. Cubs ropicana Field, St. Petersburg, FL

BALTIMORE-WASHINGTON

September 7, 2017 October 20, 2017


opic:Developing Effective raining Programs Speaker: Dave Fuller Maggiano’s Little Italy at ysons Galleria Mclean, VA

CHAPTER DEMO DAY

MINNESOTA

Office of Complete Property Services, Inc. Oldsmar, FL

October 3, 2017 CHAPTER FALL TECHNICAL SESSION

October 5, 2017

September 28, 2017

CHAPTER GOLF TOURNAMENT

CHAPTER LUNCHEON MEETING

26th Annual Golf Outing Te imbers at roy, Elkridge, MD

Maggiano’s Perimeter, Atlanta, GA

opic: Strengthening of Existing Structures Speaker: arek Alkhrdaji, PhD, PE – Structural echnologies Offices of American Engineering esting St. Paul, MN

October 26, 2017

NEW ENGLAND

CAROLINAS


September 19, 2017

October 26-27, 2017

Maggiano’s Perimeter, Atlanta, GA

CHAPTER MEGA DEMO

GEORGIA

Frank Jones Center, Portsmouth, NH

CHAPTER FALL CONFERENCE

opic: Adaptive Reuse Winston Salem Marriott Winston Salem, NC CENTRAL FLORIDA

GREATER CINCINNATI

October 6, 2017

NORTH TEXAS

CHAPTER SOCIAL OUTING

September 14, 2017

Belterra Park Downs Raceway Cincinnati, OH

CHAPTER MEMBERSHIP MEETING

Mattito’s ex-Mex in Oak Lawn Dallas, X

September 13, 2017 CHAPTER MEETING

opic: Surface Preparation Red Lobster, Sanford, FL CHICAGO

GULF SOUTH

September 21, 2017

October 6, 2017

CHAPTER FALL MEETING

CHAPTER GOLF OUTING

opic: Concrete Under Distress Te Club, Birmingham, AL

Jesse Points Golf Classic Waterchase Golf Club, Fort Worth, X

GREAT PLAINS

NORTHERN CALIFORNIA

September 14, 2017

September 19, 2017

CHAPTER GOLF OUTING


September 8, 2017 CHAPTER SOCIAL EVENT

Wrigley Rooftop Baseball Cubs versus Brewers Wrigley Rooftop, Chicago, IL

iffany Greens Golf Club Kansas City, MO

opic: 2016 Project Awards, Hibernia Bank Scott’s Seafood Grill and Bar Oakland, CA

DELAWARE VALLEY

September 28, 2017

METRO NEW YORK

CHAPTER GOLF OUTING

September 14, 2017

ROCKY MOUNTAIN

CHAPTER GOLF OUTING

September 28, 2017

Metro New York Fall Golf Classic XIV Cedar Hill Golf & Country Club Livingston, NJ

CHAPTER SPORTING CLAY TOURNAMENT

Rock Manor Golf Course Wilmington, DE

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8th Annual Sporting Clay ournament Kiowa Creek Sporting Club Bennet, CO

WWW.ICRI.ORG

ROCKY MOUNTAIN

November 8, 2017 CONCRETE UNIVERSITY SYMPOSIUM

All Day Education Seminars Including Concrete Slab Moisture Testing Arapahoe County Fairgrounds Aurora, CO SOUTH CENTRAL TEXAS

September 27, 2017 CHAPTER LUNCHEON

Topic: ICRI Guide 320.2R Speaker: Mark LeMay, AIA, LEED, AP NXNW Restaurant & Brewery Austin, TX SOUTHEAST FLORIDA

October 27, 2017 CHAPTER GOLF TOURNAMENT

20th Annual Golf Tournament Jacaranda Golf Club, Plantation, FL SOUTHERN CALIFORNIA

September 20, 2017 CHAPTER TECHNICAL SEMINAR

Topic: Moisture and Concrete Slabs Speaker: Bud Earley, Aquafin Phoenix Club, Anaheim, CA SOUTHWEST FLORIDA

September 22, 2017 CHAPTER SPORT OUTING

Inaugural Sporting Clay Classic Gulf Coast Sporting Clays Naples, FL October 17, 2017 GENERAL MEMBERSHIP MEETING

Board Elections for 2018 Crowne Plaza Holiday Inn Fort Myers, FL TORONTO

VIRGINIA

October 10, 2017

September 21, 2017

CHAPTER TECHNICAL MEETING

CHAPTER FALL SYMPOSIUM

Speaker: Peter Emmons, Structural Group Location: TBD Toronto, ON

WWW.ICRI.ORG

Topic: Repair of Water, Wastewater and Pumpstations Colonial Heritage Club Williamsburg, VA

FOR UP-TO-DATE CHAPTER ACTIVITIES AND FULL DETAILS ON THOSE LISTED HERE, VISIT WWW.ICRI.ORG.



51

CHAPTER NEWS NORTH TEXAS LEARNS ABOUT SILICA DUST

Ignacio Nemirovsky presenting to the ICRI North Texas Chapter on the upcoming silica regulations

During a delicious ex-Mex lunch at Mattito’s in Dallas on June 8, 2017, members and affiliates of the North exas Chapter listened to a presentation on the impending changes to the OSHA regulations regarding silica dust, that are expected to be implemented in September 2017. A crowd of 41 attended the meeting to hear the presentation by Jasher Sutton, Regional Regional Manager for Hilti, and Ignacio Nemirovsky, Concrete rade Manager for Hilti. Te team discussed the important provisions of the new OSHA regulations—many of which are sure to be of critical cr itical importance to the concrete repair industry industr y. Among the topics of discussion were new White Papers, developed by Hilti and a consortium of approximately 25 other companies. Tese documents were written to help those in the construction construction industry industry understand understand the biggest compliance issues with the new standards. New permissible exposure limits, that are being implemented to prevent silica-related deaths and illnesses, were reviewed along with several available options for employers to ensure their employees are protected. While many questions exist regarding the enforcements of the provisions, all in attendance were grateful for the opportunity to discuss methods of compliance and intricacies of the new standards.

GULF SOUTH HOSTS SUMMER LUNCH

A Summer Summer Lunch Meeting was held in Birmingham, Birmingham, Alabama, at Hoar Hoar Construction Construction’s ’s raining Room. Room. Te Gulf South chapter’s chapter’s attendees enjoyed a wonderful hot lunch from a local catering company and discussed chapter updates, successes, and new initiatives before the official presentation. Te theme for this lunch program was OSHA’s OSHA’s new Silica Standards and what this means for the industry industr y and its designers and contractors. Te featured guest speaker was Tomas G. Robinson from the Associated General Contractor’s Central Alabama office. Mr. Robinson has served as a loss control consultant as well a safety and training coordinator for the past 12 years. His presentation was very insightful as well as thought provoking—man provoking—manyy questions were asked asked and answered. Tis topic topic will will be revisited very soon for additional updates. A crowd gathered gathered in Birmingham, Birmingham, AL for for a recent Gulf South South Chapter presentation on the new silica standards from from OSHA

ROCKY MOUNTAIN GETS A SILICA EDUCATION AS WELL

Te Rocky Mountain Chapter held its first technical presentation presentation of 2017 at the Breckenridge Brewery in Littleton, Colorado, on Tursday, May 11, 2017 with 35 members and guests in attendance. Te topic of the presentation was the introduction to the Crystalline Crysta lline Silica Silic a Standard Standar d developed by OSHA. Mr. Mr. John Olaechae, Compliance Assistance Specialist, Specia list, Region VIII, U.S. U.S. Department of Labor (OSHA), highlighed the standard’s intent and the services available to contractors and specifiers for the compliance to the Crystalline Silica Standard.

The Rocky Mountain chapter welcomed 35 attendees to listen to John Olaechae (OSHA) present on the Crystalline Silica Standard Guest speaker John Olaechae highlights the services provided by OSHA to the Rocky Mountain chapter

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SEPTEMBER/OCTOBER SEPTEMBER/OCTOB ER 2017

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CHAPTER NEWS METRO NEW YORK ON THE SEAS

On Tursday, June 15, 2017 the Metro New York Chapter of ICRI hosted its 4th Annual Fishing rip. rip. Members Members and guests enjoyed a quick breakfast before sailing out from Freeport, Long Island. Captain Jim and his crew chartered a course through the bay and out to open water. Tose who fished were limited to bottom fishing for seasonal fluke and quite a few attendees were able to take home fish for dinner. Lunch and drinks were on board. Te keepers that were caught were cleaned and filleted by the crew. Other fish were caught including sea robins and out of season sea bass. Tere was also a cash prize for the biggest fish. It was a beautiful day on the water and sunscreen was definitely definitely in high demand.

Now THAT'S what I am talking about!

What the what? I got a flying Sea Robin? Is that good?

Is that what you call a ‘Keeper?’

Did you know that ICRI has 38 chapters, including including 2 student chapters, across the US and Canada? Visit www.icri.org www.icri.org to find out more.

WWW.ICRI.ORG

No trip is complete without a photo and a photo bomb

SEPTEMBER/OCTOBER 2017 CONCRETE REPAIR BULLETIN

53

CHAPTER NEWS BRITISH COLUMBIA CHAPTER HOSTS SUCCESSFUL SUMMER EVENT

he ICRI British Brit ish Columbia Columb ia Chapter Chapte r hosted a successful succe ssful summer outing at a recent Vancouver Canadiens minor league baseball game. Te chapter attendees and guests gathered at Scotiabank Field at Nat Bailey Stadium for a game against the Spokane Indians and enjoyed some fantastic BBQ from Hard Rock.

PITTSBURGH HOSTS ANNUAL GOLF OUTING

 h e P i t t s b u r g h Chapter recently held its 18th Annual Golf Outing. After a late start due to some heavy rains in the area, 52 golfers were able to partake of some sunshine and golf. After play was wrapped up, everyone enjoyed an excellent outdoor meal an and d p rize rizes. s. Chapter members and non-members alike appreciated the chance A late start could not damper the e nthu- to enjoy some time sias m for all the fan tas tic raf fle priz es away from work and gathered for the event the chance to network with other industry professional (concrete that is, not golf !). As always, many thanks to Mike Wuerthele for his hard work to make this a great Pittsburgh Chapter event.

2017/2018 CHAPTER NEWS DEADLINES JANUARY/FEBRUARY 2018

November 10, 2017

MARCH/APRIL 2018

January 10, 2018

Send your Chapter News to Dale Regnier, Chapter Relations Director, at [email protected] Attendees and guests enjoyed an amazing meal on the patio after a successful day of golf

CHAPTER AWARDS AWARDSPROGRAM PROGRAM The ICRI Chapter Awards Program gives recognition to our chapters that, through their operations, programs and activities, display a dedication to excellence and a commitment to success. Chapter of the Year, Outstanding Chapters, Excellent Chapters, Most Improved Chapter, and Outstanding Chapter Event awards are presented during ICRI's Annual Spring Convention. Visit www.icri.org for more information on ICRI Chapters.

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SEPTEMBER/OCTOBER SEPTEMBER/OCTOBER 2017

WWW.ICRI.ORG

CHAPTER NEWS CHAPTERS COMMITTEE CHAIR’S LETTER

I want to share a quote from business leadership legend Dee Hock: “An organization, no matter how well designed, is only as good as the people who live and work in JOHN McDOUGALL Chapters Chair it.” Our organization is successful, respected, valued and growing solely because of those who have and continue to invest their time, passion and efforts in ICRI. Nowhere is this more evident than with our chapters. Our chapters are the grassroots of ICRI and our chapter leaders are the champions making OUR organization world class. On the topic of organization, it seems appropriate to mention the upcoming Chapter Awards and Annual Report. Shortly after the new year, the Chapters Committee and Chapter Relations Director Dale Regnier will be publishing the 2017 Annual Report Forms and Awards Forms. Te Annual Report is a requirement of all chapters to complete and submit annually. While the forms are updated annually, the intent remains the same, it is to provide a snapshot into the health and well-being of your chapter. Te Chapter Awards program is a tool the Chapters Committee uses to celebrate the successes of our chapters. It is also a road map for best practices for chapter leadership and management. In a dedicated effort to impart equal opportunities to small, new and rebuilding chapters the awards system is weighted on growth year over year, rather than volume.

Going into the fourth quarter is time to consider your chapter’s annual elections for the 2018 slate of officers and directors. Your Nominations Committee Chair should be recruiting prospective leaders to participate in chapter operations. If there are any challenges in recruitment, or if the recruit has questions regarding the commitment, please do not hesitate to reach out to Dale or myself. Tese new chapter leaders are critical to the future of your chapter and ICRI. I trust it has been a roaring third quarter and I’m looking forward to the fourth quarter and beyond. As you enter the holiday season and look at your chapter social calendar, I encourage you to consider partnering with a charity or cause where you have passion. Last season I attended a chapter party in December where there was a donation request to support oys for ots. We are blessed to be in this current economy and it can be rewarding to give back to your community and put a smile on someone’s face. As these holiday parties are being scheduled, please, PLEASE, please send updates to Dale and the CRB team for inclusion in the Chapter Meetings & Events section. Don’t forget to submit photos from the events, too—easy and free, shameless plugs for you and the chapter. Look for a recap of New Orleans, the Chicago Round able and developments with our Certifications Programs in the next editions of the Chapters Chair Letter. All the best, John McDougall ICRI Chapters Committee Chair

For the latest ICRI Chapter information visit www.icri.org. WWW.ICRI.ORG



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NEW PRODUCTS W. R. MEADOWS INTRODUCES PERMINATOR® EVOH

W. R. MEADOWS rolls out its newest addition to their vapor barrier product line with PERMINAOR EVOH. Tis seven-layer co-extruded barrier manufactured from state-of-the-art polyeth ylene and EVOH resin is specifically designed for brownfield sites. PERMINAOR EVOH provides superior resistance to gas and moisture transmissions. PERMINAOR EVOH is a highly resilient underslab barrier designed to restrict gases, such as gasoline, solvents, oils, and hydrocarbons from migrating through the ground and into the concrete slab. Te product also protects against naturally occurring gases such as radon and methane.

DESIGN OPTIMIZATION MAKES BOSCH BULLDOG™ XTREME SDS-PLUS® ROTARY HAMMER BITS THE CHOICE FOR CORDLESS POWER TOOLS USED IN DIVERSE CONCRETE APPLICATIONS

Bosch utilizes a proprietary diffusionbonding technology, a high-heat, highpressure solid-state welding process that produces an incredibly strong steel/ carbide bond. Tis gives Bosch Bulldog Xtreme bits superior strength and a fullhead carbide tip that won’t break off when the work gets tough in any concrete or aggregate application.

New variable flute design offers 25 percent more holes per charge; four flutes transfer dust away faster keeping the tip cooler and the hole cleaner before transitioning to a two-flute design that removes larger amounts of material from the hole.

Te centric conical tip guides the bit and results in rounder holes, which is important when setting anchors or fasteners. A wear mark alerts the user when the bit has worn to a level where it’s no longer precise. Bit sizes for the full range extend from 3/16” to 1 1/8” diameter. For U.S. users, this tool should be used in accordance to the OSHA silica regulations designed to limit silica dust exposure, as well as the owner’s manual.

As cordless tools continue to dominate the jobsite, it becomes more important to team them up with optimized accessories. Bosch Bulldog™ Xtreme SDSplus® Rotary Hammer Bits are now optimized for use with cordless power tools based on a robust two-flute design that ensures great speed in dust removal with less potential for binding. PERMINAOR EVOH efficiently resists gas and moisture migration as part of a passive or active building envelope control system. It can be effectively installed across floors, walls, and crawlspaces, greatly reducing condensation, mold, fungus, mildew, and degradation. PERMINAOR EVOH’s seven-layer protection with its EVOH gas barrier core is tough enough to not crack, puncture, snag, split, or tear easily on the construction site. For more information on PERMINAOR EVOH, such as application information and technical data, visit wr meadows.com/pe rm inator-e vohunderslab-gas-vapor-barrier.

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o learn more about the Bosch Bulldog Xtreme Rotary Hammer Bits or to find a local dealer, visit www.boschtools.com or call 877-BOSCH-99. BOSCH GBL18V-71 18V BLOWER MERGES GREAT EFFICIENCY AND VERSATILITY

Range of attachments allows blower to move seamlessly from task to task.

One thing that hasn’t changed about the Bulldog Xtreme line is full-head carbide for bits up to 5/8" that delivers 4X life drilling in concrete with rebar, yet offers maximum drilling speed and precision. Advanced geometry ensures per for mance with less carbide wear. Bits beyond 5/8" feature a four-cutter design.

When the task is clearing dust and debris on the jobsite, the Bosch GBL 18V-71 18V brings efficiency and ergonomic design to one of the most functional cordless professional-grade blowers available. With a motor that delivers powerful 71 CFM (cubic feet per minute) volume (167 mph) in a balanced tool, Bosch offers a blower that gets work done quickly.

he over all flute design of the bit enhances dust removal, reduces operating temperatures and reduces bit stress in concrete and rebar. Full-head carbide bits feature the Velocity flute design: four flutes that transition to two larger flutes for increased dust removal capacity and a cleaner hole. Bosch Bulldog Xtreme bits deliver performance in reinforced concrete or harsh aggregate, plus light weight and normal weight concrete.


When paired with the Bosch 622 6.0 Ah 18-volt battery or the Bosch GSA18V 6.3 Ah CORE18V battery, the GBL 18V-71 blower delivers extreme runtime of up to 54 minutes at low speed. Te runtime parameter is five minutes per battery amp hour at high speed, nine minutes per amp hour at low speed.

WWW.ICRI.ORG

NEW PRODUCTS Te blower’s variable speeds and ergonomic handle with soft grip make work easier. In addition, the tool is optimally balanced to minimize user fatigue, especially during long periods of use.

Te GBL18V-71 is being sold in the GBL18V-71N kit, which includes a standard nozzle, nozzle extension and a small diameter nozzle with a debriscollection tube. he small-diameter nozzle is for cleaning out small holes and cracks. Te debris-collection tube that fits over the small nozzle is designed to catch the cleared-out dirt and dust so that it doesn’t fly into the user’s face. o lear n more about the Bosch GBL18V-71 18V Blower or to find a local dealer, visit www.boschtools.com or call 877-BOSCH-99. MULTI-FUNCTIONAL THIN PATCHING MORTAR ANNOUNCED

ChemMasters, Inc. has announced the introduction of ChemMasters® hin Patch, a versatile single component cementitious repair mortar for thin repairs to concrete substrates. ChemMasters Tin Patch has been specially formulated for durable repairs on horizontal, vertical and overhead surfaces ranging from featheredge to 1” depth in either interior or exterior applications.

ChemMasters Tin Patch is polymer modified for enhanced durability and adhesion, with integral air entrainment for exceptional protection from damage caused by freeze/thaw cycles and deicing chemicals. It has superior finishing characteristics and can be used to create a smooth, broom, float or trowel finish on foundations, walls, sidewalks, drive ways, steps, or floors. ChemMasters Tin Patch has outstanding abrasion and impact resistance with high flexural, tensile and compressive strengths for long lasting repairs to most concrete surfaces.

seals under hydrostatic environments and can be installed in all weather conditions on green or damp surfaces.

ChemMasters, Inc. is a 60-year-old manufacturer of specialty concrete chemicals used to improve, repair and protect concrete and masonry. Te company is the acknowledged leader in the formulation and manufacturing of lowVOC solvent-based products for use in the states that require them. A state-ofthe-art research and development facility is operated by ChemMasters to advance the science of concrete improvement.

For more information on our newly released CLAY-IE waterproofing product, visit wrmeadows.com/clay-titebentonite-waterproofing-membrane.

For more information visit www.chemmasters.net. W. R. MEADOWS ANNOUNCES NEW CLAY-TITE

W. R . Meadows has recently add ed CLAY�IE Bentonite Waterproofing Membrane, a dual layer waterproofing membrane consisting of virgin HDPE, sodium bentonite, and a protective layer consisting of a non-woven polypropylene, to its vast line of construction products. Te HDPE in CLAY-IE provides the first layer of waterproofing while the bentonite’s self-sealing capabilities ensure puncture protection under hydrostatic conditions. Te additional of polypropylene fabric protects the bentonite on the job site and from direct shotcrete installation.

BROKK BRINGS INDEPENDENCE TO COMPACT DEMOLITION

Brokk, the world’s leading manufacturer of remote-controlled demolition machines, offers the smallest dieselpowered demolition robot, the Brokk 120 D. Te machine weighs less than one-fourth of the Brokk 400 Diesel. Its six-gallon fuel tank and efficient operation allow run times longer than eight hours before refueling. Te Brokk 120 D’s compact size — 31 inches wide, 80 inches long and 49 inches high — enables it to pass through any standard door opening as well as maneuver in tight spaces. Meanwhile, its light weight — about 2,700 pounds — allows it to drive over weight-restricted floors and helps make it easy to transport to and from sites.

Designed for use below-grade, CLAY IE can be used in both vertical and horizontal applications. CLAY-IE is an outstanding choice for tough and durable waterproofing, even when used in high water head conditions. It selfWWW.ICRI.ORG



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NEW PRODUCTS Powered by a compact and efficient diesel engine, the Brokk 120 D can run a full shift independent from any power source. Tis flexibility comes without sacrificing any of the power and performance of its similar-sized electricpowered sibling, the Brokk 100. Plus, the Brokk 120 D uses the same attachments and generates the same hydraulic power as the Brokk 100, increasing its versatility.

removal tasks, such as renovation and bridge and road repair.

Brokk designed the Brokk 120 D for a variety of applications. It fulfills emergency response needs for search-andrescue efforts, explosive ordinance disposal and firefighting. It’s suited for use in the nuclear industry due to its compact size and power. Te construction industry can benefit from its easy transport, diversity of attachments, and light weight that make it ideal for a variety of jobs, including demolition and cutting. Te B120 D also fits well in the process and underground industries, where use of a power cable can be incon venient or inadvisable.

he 5,0 70- pou nd (2,300 -ki logram) Aqua Cutter 710V use s 14,500 - to 40,000-psi water jets to remove as much as 35 cubic feet (1 cubic meter) per hour of concrete. Contractors adjust the robot’s stroke to control the depth of cuts and vary the pressure of the water jet depending on whether they are removing loose, deteriorated concrete or lowering the sound concrete to a pre-determined depth. A valuable feature of hydrodemolition is that rebar is cleaned and descaled during the process, whereas alternative methods, such as pneumatic tools or milling machines, may damage the rebar or produce microfracturing in the remaining concrete.

he Brokk 120 D is the third, and smallest, diesel-powered machine in Brokk’s lineup. Te Brokk 400 Diesel and Brokk 800 Diesel have been available for several years, but are significantly larger than the Brokk 120 D. For more information visit www.brokk.com AQUAJET INTRODUCES POWERFUL AQUA CUTTER 710V FOR HEAVY-DUTY CONCRETE REMOVAL

Aquajet Systems AB, a global leader in hydrodemolition machine manufacturing, introduces its farthest-reaching unit, the Aqua Cutter 710V hydrodemolition robot. It’s the largest of its kind and offers exceptional horizontal, vertical and overhead reach — as high as 23 feet. Te 710V comes equipped with Aquajet’s hallmark ceramic nozzles that last as much as 79% longer than standard steel versions. Its design makes it suitable for a wide variety of concrete

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Operators can control the 710V from a safe distance using the unit’s radio remote control, either wirelessly or with a hard wire. Te remote communicates with the robot’s wheeled power control module. Te 710V features a powerful 18-kW diesel engine. Contractors can add an Aqua je t Hy br id Ki t, wh ic h ea si ly attaches to a diesel-powered Aqua Cutter robot for electric operation in applications where diesel engines aren’t allowed, such as parking garages, inside buildings or in other urban environments. Te kit uses an intelligent system to automatically disengage the onboard diesel engine. Aqua Cutter robots feature uniqu e ceramic nozzles specifically designed for demanding hydrodemolition applications. Te highly efficient nozzles last 300-350 hours, depending on the water quality. Standard steel nozzles on com-


petitive equipment typically have a lifetime of 20-40 hours. All Aqua Cutter robots feature Aquajet Systems’ patented Equal Distance System. EDS keeps a preset distance from the nozzle to the concrete surface, regardless of the angle of the water jet, allowing for maximum efficiency and productivity. Systems without EDS lose as much as 20% of the power before the water hits the concrete, greatly reducing productivity and increasing waste. Te 710V robot fits into Aquajet Systems’ 23-foot (7-meter) Power Packs. Te large metal containers include a high pressure Hammelmann pump, large capacity diesel engine and control system, with a convenient storage area for the robot. he hydrodemolition robot features unrivaled ease of access for all maintenance, allowing for minimal downtime. Te unique gullwing hood and foldable back cover of the Aqua Cutter robot offers total access for both daily maintenance, such as checking oil levels, as well as periodic service jobs, such as oil and filter changes. Te robot also comes in a larger version, the Aqua Cutter 710V XL. Te 5,357pound (2,430-kilogram) 710V XL is 23 percent larger than the 710V, allowing for lower overall ground pressure and the ability to handle more reaction force. Te 710V and 710V XL are both compatible with Aquajet Systems’ line of accessories, such as rotolances and circular power heads, as well as spines and frames. For more information visit www.aquajet. se.

For the best in product manufacturers visit www.icri.org

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NEW MEMBERS COMPANY MEMBERS

AVA Construction Corporation 9Durian Street Quirino 2B Quezon City, Asia 1102 Philippines Edgardo Alinea Email: [email protected] Epic Forensics & Engineering, Inc. 8401 Lake Worth Road, Ste 133 Lake Worth, Florida 33467 United States Bernhard Messerschmidt Email: [email protected] Fire-Seal, LLC 167 South State St, Ste 250 Westerville, Ohio 43081 United States Vince Catalogna Email: vcatalogna@fireseal-llc.com Glenn Waterproofing, LLC 5325 Marshall Air Dr. Charlotte, North Carolina 28217 United States Ana Glenn Email: [email protected]

TERRATHANE RAISES THE BAR and the hotel, parking garage, tunnel, street, and sidewalk.

Pacific Contract Flooring, Inc. 3950 N Chestnut Ave, Ste 104 Fresno, California 93726 United States Perry Ordaz Email: perry@pacificcontractflooring.com Prepcon, Inc. 6737 Dogwood Rd Baltimore, Maryland 21207 United States Michael Glorioso Email: [email protected] Sullivan Thompson Masonry & Restoration 55 New Montgomery St, Ste 401 San Francisco , California 94105 United States Deborah President Email: [email protected]

53 YEARS OF SERVICE. WE’RE THE AMERICAN COMPANY THAT PIONEERED GPF AND WE ’RE STI LL LEAD ING TH E WAY.

ADDITIONAL INDIVIDUALS FROM MEMBER COMPANIES

Matthew Bradley GACO Western, Inc. 8853 Bella Vita Cir Land O Lakes, Florida 34637 United States Email: [email protected]

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GEOTECHNICAL POLYURETHANE FOAM

TERRATHANE.COM | 800.346.8229 | [email protected]



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NEW MEMBERS Nina Breece Concrete Protection & Restoration, Inc. 2811 Lord Baltimore Dr. Baltimore, Maryland 21244 United States Email: [email protected]

Travis Sellers Phoenix I Restoration & Construction, Ltd. 14032 Distribution Way Farmers Branch, Texas 75234 United States Email: [email protected]

Rick Broadrick Prime Resins, Inc 1315 North Stanford Avenue Upland, California 91786 United States Email: [email protected]

Steven Cooper Ardex Americas 400 Ardex Park Dr. Aliquippa, Pennsylvania 15001 United States Email: [email protected]

David Smith Glenn Waterproofing, LLC 5325 Marshall Air Dr. Charlotte, North Carolina 28217 United States Email: [email protected]

Jim Buckler Morris & Ritchie Associates, Inc. 1220-C East Joppa Rd, Suite 505 Towson, Maryland 21286 United States Email: [email protected]

Peter Deschamps NEOGARD (A part of the Hempel Group) 218 Bogert Ave. Toronto, Ontario M2N 1L3 Canada Email: [email protected]

ADDITIONAL INDIVIDUALS FROM SUPPORTING MEMBER COMPANIES

John Doutt Southern Paint & Waterproofing Company, Inc. 3306 Liverty Road Greensboro, North Carolina 27406 United States Email: [email protected] Julie Galbraith Simpson Gumpertz & Heger, Inc. 500 12th St., Suite 270 Oakland, California 94607 United States Email: [email protected] Nick Harris Freyssinet, LLC 44880 Falcon Place, Suite 100 Sterling, Virginia 20166 United States Email: [email protected] Chad Heikkila Willseal 34 Executive Drive Hudson, New Hampshire 3051 United States Email: [email protected] Jordan Rolon King Packaged Materials Co. 190 Eagle Glen Drive East Fallowfield, Pennsylvania 19320 United States Email: [email protected]

Daniel Grant Ardex Americas 10800 FM 1565 Terrell, Texas 75160 United States Email: [email protected] Taylor Paulson Coastal Construction Products 3131 Opportunity Court South Daytona, Florida 32119 United States Email: [email protected] John Weisbarth Euclid Chemical Company, The 19218 Redwood Rd Cleveland, Ohio 44110-2799 United States Email: [email protected]

INDIVIDUAL MEMBERS

Edward Addison Stonhard, Inc. 90 7th Ave Troy, New York 12280 United States Email: [email protected] Tom Baquial Sika Corporation 22312 Far Far A Way Colfax, California 95713 United States Email: [email protected]

Luc Chartrand Peintures MF 716 Carre Etienne-Blyth St-Jerome, Quebec J7Z 7M7 Canada Email: [email protected] Emily Chou Simpson Gumpertz & Heger, Inc 41 Seyon Street, Building 1, Suite 500 Waltham, Massachusetts 02453 United States Email: [email protected] Derl Curry SKA Consulting Engineers, Inc. 300 Pomona Dr Greensboro, North Carolina 27407 United States Email: [email protected] Brian Davies Hubbell, Roth & Clark, Inc. 555 Hulet Drive Bloomfield Hills, Michigan 48302 United States Email: [email protected] Jeremy Deal 125 18th Street North Pell City, Alabama 35125 United States Email: [email protected] Joe Dean Industrial Caulk & Seal, Inc. 302 Broad St. Delta, Pennsylvania 17314 United States Email: [email protected]

ICRI has members representing over 35 countries. ICRI is truly an international organization. Visit www.icri.org to find out more. 60



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ICRI Mission and Strategic Plan Benefits Members and the Industry ICRI Mission: ICRI provides education, certification, networking and leadership to

improve the quality of repair, restoration, and protection/preservation of concrete and other material systems. Our Vision: ICRI

will be the center for repair leadership supporting a profession built on science and craftsmanship making the built world safer and longer lasting.

Join Us! Visit www.icri.org.

The leading resource for education and information to improve the quality of repair, restoration, and protection of concrete.

MEMBER BENEFIT! PDFs of ICRI Technical Guidelines*

are FREE to MEMBERS!

*Some exclusions apply.

The full list is available through the GUIDES/ PUBLICATIONS drop-down menu on the ICRI website. Just click on the GUIDELINES FREE TO ICRI MEMBERS link; take a look at the list and download those ICRI Technical Guidelines you would like to have in your digital library. Hard copies must be purchased in the Bookstore. The free Technical Guidelines are only available through the special secure section and you must be logged in as a member.

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NEW MEMBERS Joshua Edwards AVR, Inc. 14698 Galaxie Avenue Apple Valley, Minnesota 55318 United States Email: [email protected]

Mark Maresko Kiewit Power Engineers 9401 Renner Blvd Lenexa, Kansas 66219 United States Email: [email protected]

Anthony Fiorato Consultant PO Box 155 Fish Creek, Wisconsin 54212 United States Email: tony@fiorato.com

Charlie Mayer Division VII of FL 7913 Beasley Rd Tampa, Florida 33615 United States Email: [email protected]

Kevin Goudarzi KGS Construction Services, Inc. 10363 Piper Lane Manassas, Virginia 20110 United States Email: [email protected]

Justin Riley Walker Restoration Consultants 6602 East 75th Street Indianapolis, Indiana 46250 United States Email: [email protected]

Heather Grazzini-Sims Carciofini Company 12101 Nicollet Ave S Burnsville, Minnesota 55337 United States Email: heather.grazzini@carciofini.com

Derek Robertson Western Specialty Contractors 720 Grand Ave Ridgefield, New Jersey 07657 United States Email: [email protected]

Ron Harder R.E. Harder Consulting Engineers Ltd. 157 Hawkdale Circle NW Calgary, Alberta T3G 2W9 Canada Email: [email protected]

Shawn Seiler Joss Contracting 11849 US Hwy 41 S Gibsonton, Florida 33534 United States Email: [email protected]

John Jackson Integrity Stone 10509 E 40th St, Kansas City, Missouri 64133 United States Email: [email protected]

Colin Stock Testing Engineers, Inc. 2811 Teagarden Street San Leandro, California 94577 United States Email: [email protected]

Henry Kreh Newtonian Solutions, Inc. 91 SW 13th Avenue Boca Raton, Florida 33486 United States Email: [email protected]

Robert Vale Valron Engineers, Inc. 100 Cameron Street, Suite 5000 Moncton, New Brunswick E1C 5Y6 Canada Email: [email protected]

Paul Laramore Sherwin-Williams Company, The 15484 College Lenexa, Kansas 66219 United States Email: [email protected]

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STUDENTS/APPRENTICES

Raffi Bedrossian University of Phoenix 2364 Loma Vista St Pasadena, California 91104 United States Email: raffi[email protected] Jose Dominguez Avalon Structural, Inc. 57 Altamont Dr. Watsonville, California 95076 United States Email: [email protected] Jeremy Dziewit Michigan Technological University 24687 Bethany Way Novi, Michigan 48375 United States Email: [email protected] Caitlin Hartnett Manhattan College 10 Lawrence Street Tappan, New York 10983 United States Email: [email protected] Gregory Kozina Florida Atlantic University 3410 Galt Ocean Dr., Apt 509N Fort Lauderdale, Florida 33308 United States Email: [email protected] Sarah Mohr University of Michigan 332 E. William St., Apt. 103 Ann Arbor, Michigan 48104 United States Email: [email protected] Maggie Murray Manhattan College 58 Glover Ave. Yonkers, New York 10704 United States Email: [email protected] Abigail Nieskes Michigan Technological University 807 E Houghton Ave. Houghton, Michigan 49931 United States Email: [email protected]


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MEMBERSHIP

NETWORKING

COMMITTEE ACTIVITIES

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EDUCATION & CERTIFICATION


CONTACT 651-366-6095

ICRI [email protected]

ICRI is Hiring! ICRI Certification Product Manager - New Position Description Te Certification Product Manager has primary marketing responsibilities for ICRI certification programs to increase awareness and participation. Te manager will also be responsible for efficient and effective implementation and maintenance of all aspects of ICRI certification programs. asks and responsibilities include marketing and selling existing and new certification programs, coordinating and scheduling certification classes, and assisting in the development of new certification and education products. Experience with product development/sales, as well as directly-related experience in the concrete restoration/repair industry, is required. Compensation is commensurate with experience and qualifications. Benefits package included. Individual’s location is open; however, nearby access to an airport is required. Visit the ICRI website at http://www.icri.org/?page=cert_manager2017 for further details and to submit an application.

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MARKET PLACE Field Non-Destructive / Destructive Testing Services “Trust the Inventor of the Rotary Percussion Sounding Delam Tool to Collect Critical Data On Your Project”

Data Gathering for: • Concrete Delamination Surveys • Stucco Delamination • Chloride Samples • Concrete Core Extraction for Petrographic and Compression Analysis

Sounding Technology, Inc. Innovators In Non-Destructive Testing Devices and Procedures

soundingtech.com | delamtool.com | 757 630-5332

CLASSIFIED AD Masonry Restoration Estimator Structural & Architectural Repairs, Coating & Lining Systems, and Heavy Duty Industrial Flooring Systems WBE, DBE, NCTRCA & HUB-Certified

-RKQ 0 3LHUFH -'

Executive Vice President [email protected]

DFW Metro 817-429-5889 Cell 817-291-0626 www.mobileenterprises.com

 6RXWKZD\ &LUFOH )RUW :RUWK 7;  Ɣ   - Ɣ ID[  -7300

Mara Restoration is a Philadelphia-area specialty contractor with a focus on masonry, concrete and building envelope restoration. We are seeking an experienced, self-motivated candidate to estimate opportunities throughout the Greater Philadelphia area. The ideal person will collaborate with the current business development and estimating teams and will be responsible for: meeting with prospective clients, troubleshooting building failures, preparing cost-based pricing proposals and maintaining communication with contacts. Prior experience is a must. Compensation will be commensurate with experience. If you are the right candidate, send your resume to: [email protected]. All emails will remain confidential.

INDEX OF ADVERTISERS ACG Engineering Services, Inc. ............................................... 59 Albion Engineering Company .................................................. 49 Alchemy Spetec (formerly Resiplast) ....................................... 53 Aquafin .................................................................................. 43 Azon ..................................................................................... 55 Blok-Lok Limited.................................................................... 49 Brokk, Inc............................................................................... 11 Cortec Corporation ................................................................. 51 Euclid Chemical Company .................................................... 9 Evonik Industries ..................................................................... 3 Fyfe Company (formerly FibrWrap Construction-Aegion)............. 48 Gary Carlson Equipment Co. ..................................................... 4 ICC Distribution...................................................................... 39 Kenseal Construction Products ............................................... 11

LymTal International, Inc........................................................... 4 MAPEI..............................................................Inside back cover Miracote Division of Crossfield Products Corp. .......................... 5 Mobile Enterprises ................................................................. 64 National Waterproofing Supply ............................................... 49 NCFI Polyurethanes ................................................................ 59 Nelson Testing Laboratories.................................................... 38 Rhino Carbon Fiber...........................................Inside front cover Sika Corporation .......................................... Outside back cover Sounding Technologies........................................................... 64 US Shotblast Corporation ....................................................... 64 V2 Composites ....................................................................... 11 Vexcon Chemicals .................................................................. 47

1000 Westgate Drive, Suite 252 | St. Paul, Minnesota 55114 USA Phone: +1 651-366-6095 | Fax: +1 651-290-2266 Web: www.icri.org | Email: [email protected]

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MAPEI: Your single-source provider from restoration to protection

Overhead Repair Solutions

System solutions for bridge restoration Column Repair Solutions

Bridge Deck Solutions

Overhead Repair Solutions

Column Repair Solutions

Bridge Deck Solutions

1. Reinforcing steel 2. Mapeshield ™ I (anticorrosion galvanic anode) 3. Planitop ® XS (hand-applied repair mortar) or Planitop 12 SR (low-pressure spray mortar) 4. Elastocolor ® Coat (protective and decorative coating)

1. Planibond ® 3C (corrosion inhibitor) 2. Planitop 11 SCC (self-consolidating concrete mix with silica fume and corrosion inhibitor) or Planitop XS (hand-applied repair mortar) or Planitop 12 SR (low-pressure spray mortar) 3. MapeWrap ™ Primer 1 (saturant) 4. MapeWrap 11 or MapeWrap 12 (epoxy smoothing putty) 5. MapeWrap 31 or MapeWrap 21 (epoxy saturant) 6. MapeWrap C Uni Ax 300 or 600 (carbon fiber fabric) 7. MapeWrap 31 (epoxy saturant) 8. Sand broadcast 9. Elastocolor Coat (protective and decorative coating)

1. Mapefer ™ 1K (anticorrosion coating) 2. Planitop 18 ES (rapid-hardening repair mortar) or Planitop 18 (very rapid-hardening repair mortar) 3. Planiseal ® LVB (crack healer/sealer) 4. Planiseal Traffic Coat FS (fast-setting epoxy overlay for bridge decks)

MAPEI offers a full spectrum of products for concrete restoration, below-grade waterproofing and structural strengthening. Globally, MAPEI’s system solutions have been utilized for bridges, highways, parking garages, stadiums, buildings and other structures. Visit www.mapei.com for details on all MAPEI products.

Concrete repair

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