Question

True and apparent specific gravity relation with void ratio

Answer 1

Answer:

Bulk density is the ratio between soil weight to the total volume of the soil (solid particle volume plus void or porous volume). It is lower than specific gravity.

Specific Gravity (G) is the ratio of the weight in air of a given volume of soil solids at a stated temperature to the weight in air of an equal volume of distilled water at that temperature.

The knowledge of specific gravity is needed in calculation of soil properties like void ratio, degree of saturation etc. The specific gravity of soil particles lay within the range of 2.65 to 2.85. Soils containing organic matter and porous particles may have specific gravity values below 2.0. Soils having heavy substances may have value above 3.0.