Characteristics of sand:

Characteristics of sand:

a. Chemically inert

b. Clean and coarse

c. Sharp, angular and durable

d. Not contain salts

e. Well graded

1. It should be chemically inert

2. It should be clean and coarse. It should be free from organic matter.

3. It should contain sharp, angular and durable grains.

4. It should not contain salts, which attract the moisture from atmosphere.

5. It should be well graded (i.e.) should contain particles of various sizes in suitable proportions.