Question

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

Answer 1

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Answer 2

A soil sample has a shrinkage limit of 10% and specific gravity of soil solids as 2.7. The porosity of the soil at shrinkage limit is 21.25%

Explanation:

Given

Shrinkage Limit $w_s=10\%=0.1$

Specific Gravity $G=2.7$

We know that Shrinkage Limit

$w_s=\frac{e}{G}$

$\implies e=w_s\times G$

$\implies e=0.1\times 2.7$

$\implies e=0.27$

We also know that

Porosity

$n=\frac{e}{1+e}$

$\implies n=\frac{0.27}{1+0.27}$

$\implies n=\frac{0.27}{1.27}$

$\implies n=0.2125=21.25\%$

Hope this answer is helpful.

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