EFFLORESCENCE TEST OF BRICKS, TEST ON BRICKS

  

          Hi friends, you are welcomed in the world of Civil Allied Gyan. In this article I have explained about efflorescence test of bricks (brick test).

By the help of this blog you can easily test the efflorescence of bricks. So please continue to the end & keep your love and support on me.

  • IS: 3495 (Part-3): 1992

APPARATUS REQUIRED FOR THE TEST:-
  • A shallow flat bottom dish containing sufficient distilled water to completely saturate the specimens. The dish shall be made of glass, porcelain or glazed stoneware and of size 180 mm × 180 mm × 40 mm depth for square shaped and 200 mm diameter × 40 mm depth for cylindrical shaped.

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Efflorescence Test Apparatus


PROCEDURE OF THE TEST:-
  1. Place the end of the bricks in the dish, the depth of immersion in water being 25 mm.
  2. Place the whole arrangement in a warm (for example, 20 to 30 °C) well ventilated room until all the water in the dish is absorbed by the specimens and the surplus water evaporates.
  3. Cover the dish containing the brick with suitable glass cylinder so that excessive evaporation from the dish may not occur.
  4. When the water has been absorbed and bricks appear to be dry, place a similar quantity of water in the dish and allow it to evaporate as before.
  5. Examine the bricks for efflorescence after the second evaporation and report the results.

Report:-
The liability to efflorescence shall be reported as ‘nil’, ‘slight’, ‘moderate’, ‘heavy’ or ‘serious’ in accordance with the following definitions:-

Nil - When there is no perceptible deposit of efflorescence.
Slight - When not more than 10 percent of the exposed area of the brick is covered with a thin deposit of salts.
Moderate - When there is a heavier deposit than under ‘slight’ and covering up to 50 percent of the exposed area of the brick surface but unaccompanied by powdering or flaking of the surface.
Heavy - When there is a heavy deposit of salts covering 50 percent or more of the exposed area of the brick surface but unaccompanied by powdering or flaking of the surface
Serious - When there is a heavy deposit of salts accompanied by powdering and/or flaking of the exposed surfaces.

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Experiment-Efflorescence-test-Results


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