Question

Which one the following represents relative density of saturated sand deposit having moisture content of 25%, if maximum and minimum void ratio of sand are 0.95 and 0.45 respectively and specific gravity of sand particles is 2.6?

• A. 40%
• B. 50%
• C. 60%
• D. 70%

Answer 1

The correct option is C 60%

(c)
At saturated moisture content void ratio is

$e=\frac{Gw}{S}=\frac{2.6\times 25}{100}=0.65$

Relative density,

$D_r=\frac{e_{max}-e}{e_{max}-e_{min}}$

$=\frac{0.95-0.65}{0.95-0.45}=0.6$

$D_r=60$%