Question

A soil sample has a shrinkage limit of 10% and specific gravity of soil as 2.7. The porosity of the soil at shrinkage limit is

• A. 21.2%
• B. 27%
• C. 73%
• D. 78.8%

Answer 1

The correct option is A 21.2%

(a)
$Shrinkagelimit,W_S=\frac{e}{G}\times 100$

$\therefore$$e=0.1\times 2.7=0.27$

$Porosity,n=\frac{e}{1+e}\times 100$

$=\frac{0.27}{1+0.27}\times 100=21.2\%$