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Question

For the determination of shear strength parameters, c and ϕ, of soil in the laboratory, the test to be conducted will be

A
Triaxial compression test
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B
Sieve analysis
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C
Compaction test
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D
Relative density test
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Solution

The correct option is A Triaxial compression test
The triaxial test is the most versatile of all shear testing method, to determine c and ϕ of the soil. Drainage conditions can be controlled, whatever be the type of soil. In the triaxial test, pore water pressure measurements can be made accurately. Volume changes can also be measured. The specimens can fail on any weak plane. The stress distribution on the failure plane is fairly uniform.

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