Soil Mechanics and Foundation Engineering - Engineering

Q1:

Pick up the correct statement from the following:

A An unconfined compression test is a special case of triaxial compression test

B An unconfined compression test is a special case of direct shear test

C The confining pressure is maximum during an unconfined compression test

D The cylindrical specimen of a soil is subjected to major principal stress till it fails due to shearing along the plane of the failure.

ANS:A - An unconfined compression test is a special case of triaxial compression test

This is a special type of triaxial test in which σ 3 = 0.
In UCS only sigma 1 is applied.