Question

The virgin compression curve for a particular soil is shown in the below figure on the standard graphical format. The compression index of the soil is

• A. 0.3
• B. 0.4
• C. 0.5
• D. 0.6

Answer 1

The correct option is B 0.4

Compression index,

$C_c=\frac{e_1-e_2}{lo{g}_{10}\left(\frac{{\overline{\sigma }}_2}{{\overline{\sigma }}_1}\right)}=\frac{1.4-1}{log\left(\frac{10}{1}\right)}=0.4$