IS 3495 part (I) = Compressive Strength Test
IS 3495 part (II) = Water Absorption Test on Brick
IS 3495 part (III) = Efflorescence Test on Brick
IS 3495 part (IV) = Warp age Test on Brick
IS 1077 = Dimensions Test on Brick
1) Compressive Strength Test.
Take 5 Brick as sample, Fill the frog with cement mortar of (1:3) proportion, Brick immersed in water for 3day so that mortar gain the strength.
After 3 days remove this brick for water and use for test, place in compressive test machine (CTM) and Apply the load of 14N/mm2/min.,till the fracture does not occur on surface.
➤Minimum compressive strength of brick = 3.5N/mm2 or 35 kg/cm2
Compressive strength in N/mm2 = Maximum load at failure in N / Average area of the bed faces in mm2
2) Water Absorption Test.
For this test oven dry brick is taken and its weight is measured (w').
Brick is immersed in cold water for 24hr or hot water for 5hr,
After immersion brick there weight again measured (w")
Water absorption, percent by mass = (w"-w')/w' *100
Note:- 24 hours Test – IS code Recommended, 5 hours Test – CPWD (not recommended by IS code)
3) Efflorescence Test on Brick.
The brick are kept in 150mm dia dish and immersed in 25mm depth of water at room temp. after all water is absorbed or evaporation it is fill again till 25mm and make to be absorbed or evaporation.
Efflorescence reported as nil, slight, moderate, heavy or serious
Nil - <1%
Slight - <10% (the brick is covered with a thin deposit of salts.)
Moderate - 10-50% deposit of salts.
Heavy - > 50% deposit of salts.
Serious -A heavy deposit of salts
4) Warp age Test on Brick
5) Dimensions Test on Brick
For this test 20 bricks are randomly selected taken arrange in the w.r.t L*B*H
Stack length are measured for (19*9*9)
permissible limits:-
length - 368cm to 392cm
width - 174cm to 186cm
height - 174cm to 186cm
see more topic 👇
Size and Weight of Bricks.
composition of bricks.
harmful ingredients in bricks.
classification of bricks.
Brick Manufacturing.
Testing of Brick.
IS 3495 part (II) = Water Absorption Test on Brick
IS 3495 part (III) = Efflorescence Test on Brick
IS 3495 part (IV) = Warp age Test on Brick
IS 1077 = Dimensions Test on Brick
1) Compressive Strength Test.
Take 5 Brick as sample, Fill the frog with cement mortar of (1:3) proportion, Brick immersed in water for 3day so that mortar gain the strength.
After 3 days remove this brick for water and use for test, place in compressive test machine (CTM) and Apply the load of 14N/mm2/min.,till the fracture does not occur on surface.
➤Minimum compressive strength of brick = 3.5N/mm2 or 35 kg/cm2
Compressive strength in N/mm2 = Maximum load at failure in N / Average area of the bed faces in mm2
2) Water Absorption Test.
For this test oven dry brick is taken and its weight is measured (w').
Brick is immersed in cold water for 24hr or hot water for 5hr,
After immersion brick there weight again measured (w")
Water absorption, percent by mass = (w"-w')/w' *100
Note:- 24 hours Test – IS code Recommended, 5 hours Test – CPWD (not recommended by IS code)
3) Efflorescence Test on Brick.
The brick are kept in 150mm dia dish and immersed in 25mm depth of water at room temp. after all water is absorbed or evaporation it is fill again till 25mm and make to be absorbed or evaporation.
Efflorescence reported as nil, slight, moderate, heavy or serious
Nil - <1%
Slight - <10% (the brick is covered with a thin deposit of salts.)
Moderate - 10-50% deposit of salts.
Heavy - > 50% deposit of salts.
Serious -A heavy deposit of salts
4) Warp age Test on Brick
5) Dimensions Test on Brick
For this test 20 bricks are randomly selected taken arrange in the w.r.t L*B*H
Stack length are measured for (19*9*9)
permissible limits:-
length - 368cm to 392cm
width - 174cm to 186cm
height - 174cm to 186cm
see more topic 👇
Size and Weight of Bricks.
composition of bricks.
harmful ingredients in bricks.
classification of bricks.
Brick Manufacturing.
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