Triaxial test:-
Question (1).
Option (a) is correct for this question. Beacause the unconfined compression test is a special form of a triaxial test in which the confining pressure is zero. The test can be conducted only on clayey soils which can stand without confinement. The test is generally performed on non - fissured saturated clay specimens. Although the test can be conducted in a triaxial test appartus as UU test , it is more convenient to perform it.
Question (2).
Option (2) is correct for this question. Because on the basis of shera strength , soils can be divided into three types.
A. Cohesionless soils
B. Purely cohesive soils
C. Cohesive - frictional soils
Purely cohesive soils:- These are the soils which exhibit
cohesion but the angle of shearing resistance phi ()
= 0 , For example, saturated clays and silts under unconsolidated
undrained conditions.
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