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Which of the following cannot be obtained by using un-drained test?

(a) Effective stress failure envelope

(b) Shear strength

(c) sensitivity

(d) All of the mentioned

This question was posed to me during an online interview.

This interesting question is from Shear Strength of Cohesive Soil in portion Shear Strength of Geotechnical Engineering I

1 Answer

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Best answer
Correct option is (a) Effective stress failure envelope

To explain: Since only one Mohr circle in terms of effective stresses, is obtained from all un-drained tests, effective stress failure envelope cannot be obtained from this test.

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