Water Absorption Test for Stone

Water Absorption Test:
 The test is carried out as follows:

• From the sample of stone, a cube weighing about 50gm is prepared. Its actual weight is recorded as: w1 gm
• Cube is then immersed in distilled water for of 24 hrs.
• Cube is taken out of water and surface water is wiped off with a damp cloth.
• It is weighed again. Let the weight be  w2 gm.
• Cube is suspended freely in water and its weight is recorded. Let this be   w3 gm.
• Water is boiled and cube is kept in boiling water for 5 hours.

        Cube is removed and surface water is wiped off with a damp cloth. Its weight is recorded. Let it be w4 gm.