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Soil Mechanics and Foundation Engineering - Engineering

Q1:

An unsaturated 100 cm3 sample of soil weighs 190 g. If its dried weight is 160 g, water content of the soil, is

A 0.188

B 0.288

C 0.388

D 0.488

E 0.588

ANS:A - 0.188

Bulk Density = Weight/Volume = 190/100 = 1.9g/cc.
Dry Density = Weight of solids/ Volume = 160/100 = 1.6g/cc.

Dry density = Bulk density/ (1+water content).

Water content = (1.9/1.6)-1.
Water content = 0.188 = 18.8%.