A brick is a small man-made rectangular block typically made of fired and sun-dried clay, used to make wall. Bricks are mostly made of clay.
In India, the standard size of brick as recommended by Bureau of Indian Standards IS: 2691:1988 is 190x90x90mm. IS Code also states that with mortar thickness added the brick size shall be 200x100x100mm
Quality of Good Bricks-
1- The
brick should be table mounted, well burnt in kilns, copper coloured, free from
cracks and with sharp and square edges. The colour should be uniform and
bright.
2- The
brick should be uniform in shape and should be of standard size.
3- The
brick should give a clear metallic ringing sound when struck with each other.
4- The
brick should not absorb water more than 20 percent by weight for first class
brick and 22 percent for second class bricks, when soaked in cold water for a
period of 24 hours.
5- The
brick when broken or fractured should show a bright homogeneous and uniform
compact structure free from voids.
6- The
brick should not break in to pieces when dropped flat on hard ground from a
height of about one metre.
7- The
brick should be sufficient hard. No impression should be left on brick surface
when it is scratched with finger nail.
8- No
brick should have the crushing strength below 105kg/cm2.
9- The
brick should have low thermal conductivity and they should be sound proof.
10-The
brick when soaked in water for 24 hours, should not show deposits of white
salts when allowed to dry in shade.
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