Tests of Bricks (Water Absorption Test)

 Tests of Bricks

Following types of few tests are conducted based on various properties of bricks

1. Absorption test
2. Crushing strength
3. Hardness
4. Presence of soluble salts
5. Shape and Size
6. Soundness
7. Structure

1. Absorption test

Following procedure followed to measure absorption of water

Objective

Water Absorption/Moisture Content of bricks

Procedure

1. The specimen is dried in a ventilated oven at a temperature of 105 to 115°C; till it attains substantially constant mass. The specimen is cooled to room temperature and its weight is recorded (W1)
2. The dried specimen is immersed completely in clean water at a room temperature of 27±2°C for 24 hours.
3. The specimen is then removed and any traces of water are wiped out with a damp cloth and the specimen is weighed. The weighing is completed 3min after the specimen has removed from water(W2)

Equipment

Weigh balance of 0-10 kg

Calculation

Water Absorption = (Difference in weight/Original weight)*100

                                ={(W2-W1)/W1}*100

Note: water absorption should not exceed more than 20% for first class of bricks.

Reference : IS Code 3495 Part 2 1992