Which of the following method can be used to determine Water content of soil sample?

Question

Question

This question was previously asked in

JKSSB JE Civil Jal Shakti 5 Dec 2022 Official Paper (Shift 2)

Answer 1

Explanation:

Methods used for finding water content:

Method	Properties
Oven drying method	Most accurate method and is a standard laboratory method
Pycnometer method	More suitable for cohesionless soil as removal of entrapped air from cohesive soil is difficult.
Sand bath method	It is a rapid method, hence not very accurate
Torsion balance method	Drying and weighing are done simultaneously with the help of infrared rays, hence one of the accurate methods
Calcium carbide method	Takes just 5-7 minutes and is used as a field test
Alcohol test	It is a quick field test and is not used for soils containing calcium or organic compound
Radiation method	Gives water content in an in-situ condition

Important Points

Methods to determine the in situ density of soil:

1) Core cutter method:

2) Sand replacement method:

3) Water replacement method:

4) Rubber balloon method:

This volume of the pit is measured by covering the pit with a plastic sheet and then filling it with water.
Thus the weight of water calculated is equal to the volume of soil excavated.

5) Radiation method: