Bricks should have uniform color that is typically deep red, cherry, or copper. They must be uniformly shaped with straight, right-angled edges and be able to withstand weathering forces like heat and rain. Bricks are also prescribed to be a standard size of 19cm x 9cm x 9cm and have a fine, compact internal structure. Additionally, good bricks will produce a clear ringing sound when struck and not be marked by a fingernail.

1. PROPERTIES OF BRICK
(
SAIYYED AKABARALI MOHAMMAD
BE (CIVIL), PGPM (NICMAR)

2. 1. Color: The color of good brick should be uniform. It may deep
red, cherry or copper colored.
2. Shape: Bricks should be uniform in shape with sharp straight
right angled edges.
3. Durability: A good brick should be able to resist the effects of
weathering agencies like temperature, rain,etc.
4. Size: Size of the bricks should be standard as prescribed by Indian
standards. [19cm x 9cm x 9cm]
5. Structure: A good brick should show fine, compact and uniform
structure in broken form
PROPERTIES OF BRICK IS 1077: 1992
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3. 6. Soundness: A good brick should give metallic ringing sound when struck with another brick.
7. Hardness: A good brick should be sufficiently hard which can be tested by a finger nail. No
mark should be left on the surface of the brick when scratched with thumb-nail.
PROPERTIES OF BRICK IS 1077: 1992
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4. 8. Crushing strength: The crushing strength of a brick should not be less than 3.5N/mm2
Compressive strength in N/mm’ ( kgf/cm2 ) = Maximum load at failure in N ( kgf)
Average net area of the two faces under compression in mm2 ( cm* )
PROPERTIES OF BRICK
9. Fall test of brick : Bricks should not break when dripped on hard ground froma height of
about 1m.
IS 1077: 1992
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5. 10. Water absorption: After immersion in cold water for 24 hours, water absorption shall not
be more than 20 percent by weight up to class 12'5 and 15 percent by weight for higher classes.
% of Water absorption= M2- Ml x loo
M1
PROPERTIES OF BRICK
11. Thermal conductivity : Thermal conductivity is a material property that describes ability
to conduct heat .Thermal conductivity can be defined as °C. It is 0.6 -1.0 w/m. k
IS 1077: 1992
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