Page 6 EN 445 : 1996
3.3.4 Reporting of results
Bleeding at the end of 3 h is given by I v1 for 25 mm diameter cylinder 3 100 % S B v ) and c ( , y h1 3 100 % for 50 mm diameter cylinder p h o Cwhere: d e v1 is the volume of water in ml on the surface of l l o the grout after 3 h r t n v is the initial volume in ml of grout o c is the height in mm of water on the surface of n h1 U the grout after 3 h , 5 h is the initial height in mm of grout. 0 0 2The report shall state the temperature at the time of y r test. a u3.4 Volume change test n a J 3.4.1 Principle of test 6The volume change is measured as a percentage of the 0 , volume of grout between the start and the end of the ) Ctest. The test measures mainly the volume change S I caused by segregation or expansion. J ( The grout used in this test may have been used for the r bleeding test (see 3.3). e t s 3.4.2 Cylinder method e h3.4.2.1 Apparatus c n a A transparent cylinder , 50 mm in diameter and 200 mm Min height. f o3.4.2.2 Procedure y t i Place the cylinder on a surface free from shocks or s r vibration. Fill it with the grout to a height h. 24 h after e v filling the cylinder measure the height (h2) of the grout i nin the cylinder. U , 23.4.2.3 Reporting of results wThe volume change at the end of 24 h is given by e b h 2 h i 2 g 3 100 % c h m - where: n a is the initial height in mm of grout (see 3.4) m h 2 h2 is the height of grout in mm after 24 h. w e 3.4.3 Can method b i g c 3.4.3.1 Apparatus m - a) Three metal cans, 120 mm high and n approximately 100 mm in diameter, with lids capable a m of preventing the loss of moisture. : b) Measuring rod or sliding calipers. y p c) Plates: o C ± stop plate, for placing on the can with a diameter d of 120 mm (see figure 3); e s n e c i L
± transparent stop plate, for placing on the grout and having a diameter of 98 mm and weight of 10 g approximately (see figure 4). d) Filling gauge. 3.4.3.2 Procedure
Place the cans on a surface free of vibration and heat radiation and store for 24 h. Immediately after mixing, pour the grout into each can using the filling gauge, to a depth of 100 mm. Carry out a measurement of the distance from the top of the can to the top of the grout: ± immediately after the containers are filled; and ± 24 h after the containers are filled; by one of the following methods. a) Measurement with the stop plate on the can Take the first measurement immediately after the cans have been filled with grout, by measuring the distance between the surface of the grout and the top edge of the can, with the stop plate on the can, in at least six places with the depth gauge or by other means (first measurement). The marking shall coincide with the top edge of the can (reference point). Then seal the cans by covering the lid with a weight of approximately 300 g until the second measurement. Carry out the second measurement 24 h after the filling of the cans. In the second measurement, measure the distance between the firm surface of the grout and the top edge of the can at the same places with the same means as for the first measurement. b) Measurement with the stop plate on the grout Immediately after filling the cans, put the stop plate (figure 4) on the fresh grout and measure with the depth gauge the distance between this plate and the top edge of the can in at least six places (first measurement). Then seal the cans. Carry out the second measurement 24 h after the filling of the cans. In the second measurement, measure the distance between the stop plate and the top edge of the can at the same six places as for the first measurement. 3.4.3.3 Reporting of results
The difference of the average values between the first and second measurement(s) in mm corresponds at 100 mm grout level to the volume change in percent and is reported as the percentage change in volume. Report the percentage change in volume as the average of the three containers to the nearest 0,1 %. Report increase of volume as (+) and decrease as (2). 3.5 Compression strength test 3.5.1 Prisms 3.5.1.1 Principle of the test
The compression strength of grout in this test (which is an adaptation to grouts of the mechanical tests described in EN 196-1) is determined on the broken halves of prisms.
© BSI
1997
Page 7 EN 445 : 1996
3.5.1.2 Apparatus I S B ) c ( , y p o C d e l l o r t n o c n U , 5 0 0 2 y r a u n a J 6 0 , ) C S I J ( r e t s e h c n a M f o y t i s r e v i n U , 2 w e b i g c m n a m 2 w e b i g c m n a m : y p o C d e s n e c i L
Dimensions in mm
a) Mixer for grout, in accordance with the requirements of EN 447. b) Ventilated drying cupboard, with a temperature of (20 ± 1) ÊC and a relative humidity of (95 ± 5) %. c) Test machines, and the devices in accordance with 4.7 and 4.8 of EN 196-1. d) Metal moulds, in accordance with 4.5 of EN 196-1. e) Metal straight edge, in accordance with figure 3 of EN 196-1. Dimensions in mm
a) Container
b) Plate a) Container
Figure 4. Plate on the grout
3.5.1.3 Procedure 3.5.1.3.1 Moulding of the test specimens
b) Plate
Figure 3. Plate on the can
© BSI
1997
The moulds and accessories shall be prepared and the specimens made in accordance with EN 196-1, with the exception noted as follows. Each mould shall be filled with the prepared grout. As an exception to the procedure in EN 196-1 (and because of the liquidity of grouts) the test specimens shall not be subjected to any vibration or shock. Immediately strike off the excess grout with the metal straight edge held almost vertically and moved slowly, with a transverse sawing motion once in each direction. Smooth the surface of the specimens using the same straight edge held almost flat. Then cover the specimens with a glass plate. Label or mark moulds to identify the specimens.
Page 8 EN 445 : 1996
3.5.1.3.2 Curing of test specimens
Cure test specimens in accordance with EN 196-1, until I they are tested. S B3.5.1.3.3 Compression test ) c The compression test shall be carried out in ( , accordance with EN 196-1. The compression strength y pshall be measured on six test specimens from three o prisms broken in flexure. C d3.5.1.4 Reporting of results e l l The report shall provide all the results of the o r compression tests, in MPa. t n oThe value obtained for each test shall be the mean of c nthe individual results. U , 3.5.2 Cylinders 5 0 03.5.2.1 Principle 2 The compressive strength of grout in this test is y r determined on the three cylinders used in the volume a uchange test given in 3.4.3. n a J 3.5.2.2 Apparatus 6 a) The cans, as described in 3.4.3.1. 0 , b) A compression test machine , as described in ) C ISO 4012. S I c) Equipment, for sawing and grinding test J ( - specimens. r e3.5.2.3 Procedure t s e After measuring the volume change, store the three hcylinders in water at (20 ± 1) ÊC until they are to be c n prepared for test. Immediately prior to test, carefully a Mdemould the specimens. f Prepare each specimen for test by sawing through the o y cylinder near the upper surface and then grinding both t i circular surfaces of the cylinder until the disc to be s r loaded in the test has a thickness of 80 mm. e v i nThen test each specimen in accordance with UISO 4012 until the maximum load ( F c) is reached. , 23.5.2.4 Reporting of results w eCalculate the compressive strength R c in N/mm2 from b i F c g c Rc = A m nwhere a m F is the failure load in N c 2 is the cross-sectional area in mm2 w A e b i gand shall be measured on three specimens, the mean c value of which shall be reported as the compressive m - strength. The report shall provide all the test results. n a m : y p o C d e s n e c i L
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Issue 2, December 1997
Page 9 BS EN 445 : 1997
National annex NA (informative) I S B ) c ( , y p o C d e l l o r t n o c n U , 5 0 0 2 y r a u n a J 6 0 , ) C S I J ( r e t s e h c n a M f o y t i s r e v i n U , 2 w e b i g c m n a m 2 w e b i g c m n a m : y p o C d e s n e c i L
Cone for fluidity test Ø 152 ± 3 1
0 1
± 0 8 2
3
±
Ø 10 ± 0,1
|
1.
0 6
Sieving medium
Figure NA1. Cone for fluidity test
© BSI
1997
I S B ) c ( , y p o C d e l l o r t n o c n U , 5 0 0 2 y r a u n a J 6 0 , ) C S I J ( r e t s e h c n a M f o y t i s r e v i n U , 2 w e b i g c m n a m 2 w e b i g c m n a m : y p o C d e s n e c i L10
blank
BS EN 445 : 1997
List of references
I S B ) c ( , y p o C d e l l o r t n o c n U , 5 0 0 2 y r a u n a J 6 0 , ) C S I J ( r e t s e h c n a M f o y t i s r e v i n U , 2 w e b i g c m n a m 2 w e b i g c m n a m : y p o C d e s n e c i L
See national foreword.
© BSI
1997
I S B ) c ( , y p o C d e l l o r t n o c n U , 5 0 0 2 y r a u n a J 6 0 , ) C S I J ( r e t s e h c n a M f o y t i s r e v i n U , 2 w e b i g c m n a m 2 w e b i g c m nBSI a m389 Chiswick High Road : London y pW4 4AL o C d e s n e c i L
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