Question

During the soil exploration of a site, the site engineer collected the soil sample which is black cotton soil in saturated condition having volume 15 ml and total mass 20 gm. After putting in oven the volume the volume of dry soil is 10.9 ml the shrinkage ratio of soil if specific gravity of soil is 2.75 is [Take $\rho w=1gm/cc$] [ Take dry mass = 17.2 gm]

• A. 2.63
• B. 1.80
• C. 2.26
• D. 1.578

Answer 1

The correct option is D 1.578

As we know that shrinkage ratio

$SR=\frac{{\gamma }_d}{{\gamma }_w}=\frac{17.2/10.9}{1.0}=1.578$