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
