FIELD TEST ON BRICKS

Field Tests on Brick to Check Quality

The following field tests are to be performed in order to determine if a Brick is good :-

1.   A good brick should be of proper shape and standard specified size, the edges of it should be sharp, there should not be any cracks and fissures on the brick. 

2.   The colour of a good brick should be copper red colour. A yellowish tint on brick indicates that it is under burnt and hence possessing of lower strength, and if a brick is of dark blackish blue colour then it indicates the brick is over burnt and is brittle in nature. 

3.   When a brick is struck by a hammer or against another brick, it should emit a clear metallic ringing sound, it should not be dull. 

4.   A freshly fractured brick should show a homogeneous compact structure without any lumps. 

5.   If a brick is dropped from about a height of 1m on a hard ground or on another brick, it should not break. 

6.   When a brick is scratched with finger nail it should not leave any impression on the brick. 

7.   A good brick (1^st Class) should not absorb water by not more than 20% of its own Dry weight when immersed in water for a period of 24 Hours.