Question

The e-p curve for a soil is shown in the figure below. The coefficient of compressibility $in{m}^2/kN$ of the soils is

• A. 4000
• B. 2000
• C. $2.5\times {10}^4$
• D. $1.25\times {10}^{-4}$

Answer 1

The correct option is C $2.5\times {10}^4$

Coefficient of compressibility,

$a_v=-\frac{\Delta e}{\Delta \sigma }$

$=-\left(\frac{0.8-0.85}{400-200}\right)=\frac{0.05}{200}$

$=2.5\times {10}^{-4}{m}^2/kN$