GATE 2023 Civil Engineering Q61

Question

A consolidated drained (CD) triaxial test was carried out on a sand sample with the known effective shear strength parameters, c' = 0 and φ' = 30°. In the test, prior to the failure, when the sample was undergoing axial compression under constant cell pressure, the drainage valve was accidentally closed. At the failure, 360 kPa deviatoric stress was recorded along with 70 kPa pore water pressure. If the test is repeated without such error, and no back pressure is applied in either of the tests, what is the deviatoric stress (in kPa, in integer) at the failure?

Accepted Answer

500 to 500