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civil engineering-->>CHARACTERISTICS OF GOOD BRICK

CHARACTERISTICS OF GOOD BRICK

The essential requirements for building bricks are sufficient strength in crushing, regularity in
size, a proper suction rate, and a pleasing appearance when exposed to view.


SIZE AND SHAPE->>The bricks should have uniform size and plane, rectangular surfaces with
parallel sides and sharp straight edges.

COLOUR-->>>The brick should have a uniform deep red or cherry colour as indicative of uniformity
in chemical composition and thoroughness in the burning of the brick.

TEXTURE AND CAMPACTENESS-->>The surfaces should not be too smooth to cause slipping of mortar.
The brick should have precompact and uniform texture. A fractured surface should not show
fissures, holes grits or lumps of lime.

HARDNESS AND SOUNDENESS-->>   
The brick should be so hard that when scratched by a finger nail no
impression is made. When two bricks are struck together, a metallic sound should be produced.

WATER ABSORPTION--->> %  & # should not exceed 20 per cent of its dry weight when kept immersed in
water for 24 hours.

CRUSING STRENGTH-->>   
should not be less than 10 N/mm2.


BRICK EARTH-->>>should be free from stones, kankars, organic matter, saltpetre, etc.

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