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GATE 2019 Soil Mechanics Quiz 9

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Question 1

A clay soil sample is tested in tri-axial apparatus in consolidated drained conditions at a cell pressure of 100KN/m2' What will be the pore water pressure at a deviator stress of 40KN/m2

Question 2

The undrained cohesion of a clay soil is 10 kN/m2. If the sensitivity of the clay is 2, the corresponding remoulded compressive strength is

Question 3

A sample of saturated cohesionless soil tested in a drained triaxial compression test showed an angle of internal friction of 30 °. The deviatoric stress at failure for the sample at a confining pressure of 200 kPa is equal to

Question 4

A drained triaxial compression test on a saturated clay yielded the effective shear strength parameters as c' = 15 kPa and ϕ' = 22o. Consolidated Undrained triaxial test on an identical sample of this clay at a cell pressure of 200 kPa developed a pore water pressure of 150kPa at failure. The deviator stress (expressed in kPa) at failure is _________ .

Question 5

Find the shear parameters, if the failure plane makes an angle of 50˚ with the horizontal, it fails under axial vertical compression in 100kN/m2 in unconfined compression test.

Question 6

In a triaxial compression test, the major principal stress was 90 kPa and the minor principal stress was 30 kPa, at failure. The pore pressure at failure was observed to be 10kPa. The tangent of the angle of shearing resistance of the sandy soil that was tested was

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Sep 29ESE & GATE CE