Water Absorption test of Bricks

Absorption Test of Bricks as per ASTM C67:

Apparatus: 

1) Balance:  It should have a capacity of not less than 2000 gm and shall be sensitive to 0.5 gm.

2) Oven:  Drying oven have a capacity of maintaining a temperature between 110 and 115 degree Celsius.

Test Specimens:

The test specimens shall consists of half bricks. 05 specimens will be tested.

Test Procedure:

* Drying: Dry the test specimens in oven at 110-115 degree Celsius for not less than 24 hours.
*Cooling : After drying cool it at a temperature 24( +/-) 8 degree Celsius with a relative humidity between 30%-70%.
* After drying and cooling weight the specimens by the balance.
* After that submerged the dry cooled specimens in clean water at 15.5-30 degree Celsius for specified time(here 24 hours).            After that remove the specimen and wipe off the surface with a damp cloth and weight the specimen. Complete weighting of each specimen within 05 minutes after removing the specimen from water.

Calculation:

Calculate the absorption of each specimen as follows:

                    Absorption, % = { (Ws-Wd) / Wd } *100

        here, Ws = saturated weight of the specimen after submerged in water

                Wd = Dry weight of specimen


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