Question

A sample of saturated sand has a dry unit weight of $18kN/m^3$ and a specific gravity of 2.7. If density of water is $10kN/m^3$, the void ratio of the soil sample will be

• A. 0.5
• B. 0.6
• C. 0.4
• D. 0.9

Answer 1

The correct option is A 0.5

(a)

${\gamma }_d=\frac{G}{1+e}{\gamma }_w$

$\Rightarrow e={\frac{G}{\gamma }}_d{\gamma }_w-1$

$=\frac{27\times 10}{18}$

= 0.5