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Civil - Construction Materials: Stones, Bricks,Concrete Blocks

Testing Of Bricks: Efflorescence Test (IS: 3495 (Part III))

   Posted On :  14.07.2016 08:29 pm

The ends of the brick are kept in a 150 mm diameter porcelain or glass dish containing 25 mm depth of water at room temperature (2030C) till the entire water is absorbed or evaporated.

Testing Of Bricks: 

Efflorescence Test (IS: 3495 (Part III)):

 

The ends of the brick are kept in a 150 mm diameter porcelain or glass dish containing 25 mm depth of water at room temperature (2030C) till the entire water is absorbed or evaporated. The water is again filled to 25 mm depth in the dish and allowed to be absorbed by the brick or evaporated. Presence of efflorescence is classified as below.

 

When the deposit of efflorescence is imperceptible.

ht          When the deposit of efflorescence does not cover more than 10 per cent

he exposed area of the brick.

derate    When the deposit of efflorescence is more than 10 per cent but less than

of the exposed area of the brick.

When the deposit of efflorescence is more than  50 per cent but the

vy         osits

not powder or flake away the brick surface.

ous       When the deposits are heavy and powder or flake away the brick surface.

 

The specifications limit the efflorescence to be not more than moderate (1050%) up to class and not more than slight (< 10 per cent) for higher classes.

 

 

Tags : Civil - Construction Materials: Stones, Bricks,Concrete Blocks
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