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Triaxial Test-II

What does the...

Question

What does the confining pressure used in triaxial compression tests on an undisturbed soil sample represent?

A

The in-situ total normal stress

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B

The in-situ total lateral stress

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C

The in-situ effective principal stress

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D

The in-situ shear stress

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Solution

The correct option is B The in-situ total lateral stress
The triaxial cell contains soil sample which is subjected to an all round pressure. This is called the cell pressure or confining pressure. It acts radially the vertical surface of the specimen and axially at the top and bottom.

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