Dywidag Rock Bolts

DYWIDAG Rock Bolts Advantages and Characteris Characteristics tics high loads with small borehole diameters continuous bar thread allows cutting at any point, length adaptation on site, easy to order and to

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coarse thread, insensitive to rough handling high bond along the bar length for anchoring into resin or cement mortar good mixing of resin cartridges through the thread ribs restressing possible angle compensation through dished plates, spherical seats or domed nuts expansion shell enables quick load transfer type of bar

nominal diameter

steel grade

[mm]

[N/mm 2]

[mm]

[mm 2]

[kN]

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 bar $ith right!hand thread

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 bar $ith left!hand thread

GEWI  Plus  $ith

right!hand thread

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max diameter over  cross!sectio cross!sectional nal area ribs A

load at yield

thread

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'xpansion (hell Anchor )$ith or $itho"t cement gro"t*

+ 2+ %+ &+ "+

(+ Anchor

dished plate domed anchor nut threadbar cement grout expansion shell

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anchor plate hex nut threadbar cement grout

Resin Bolt

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dished plate hex nut calotte washer threadbar cement grout resin ,ields of Application  tunnel and shaft construction  cavern construction  mining  slope stabiliation  attachments, e+ g+ formwork

DYWIDAG Rock Bolts ! Anchorages Anchorage $ith domed n"t and dished plate

steel grade

nominal diameter

order +o plate

plate dimensions

order +o n"t

-+.mm/0

[mm]

123.433

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233.223

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233.223

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233.223

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233.223

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543.633

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543.633

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543.633

2"

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543.633

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[mm]

Ancchorage $ith hexagon n"t7 spherical seat and dished plate

steel grade

-+.mm/0

nominal diameter

[mm]

order +o plate

plate dimensions

[mm]

order +o n"t

order +o spherical seat

233.223

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233.223

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833.9933

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further plate dimensions available on request Anchorage for rock bolts $ith steel grade (t823.9323

steel grade

nominal diameter

order +o plate

plate dimensions

order +o n"t

-+.mm/0

[mm]

823.9323

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823.9323

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[mm]

DYWIDAG Rock Bolts ! Accessories 'xpansion (hell

borehole type diameter  D(I

for bar si:es

rock

;"ality

-mm0

". !- !) $-* 2#- 2#) 22-* 2"- 2"-* 2!)* 2$- 2$-* %#-* %2-

<<.<4

22$

hard

<1.<6

2$&

potassium

<1.<6

2$"

medium har

<1.<6

2%"

hard

<8.15

2'

hard

11.14

2$"

potassium

1<.16

2%!

hard

23.26

2%'

hard

28.53

222

hard

xpansion shells for -* grade bars on request only

Re;"ired resin cartridge vol"mes

(election criteria

"ndergro"nd

expansion shell

resin

limited

limited

%# N/mm 2

low

yes

limited

corrosion protection

yes0

yes

fast loading

yes

yes

stressing

yes

yes00

limited

yes

yes

yes

"sable in cleft gro"nd conditions

re;"ired strength of rock

s"ited for $et borehole

Application techni;"e

s"ited for advance thro"gh blasting

sensible for deviations of the borehole diameter  0 expansion shell anchor with cement grout in1ection

00if free length is guaranteed

cemen

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