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Determine the friction angle

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Reference no: EM131137217

A CU test on a stiff, over consolidated clay at a constant cell pressure of 150 kPa gave a peak deviatoric stress of 448 kPa. The corresponding excess pore water pressure was -60 kPa. Determine the friction angle. Is this the critical state friction angle? Explain your answer.

Reference no: EM131137217

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