(a) After performing a triaxial test in the lab, the maximum deviator stress was found 50...

(a) After performing a triaxial test in the lab, the maximum deviator stress was found 50 psi. If the confining pressure was 15 psi, then draw the mohr circle diagram. If the cohesion (c) is 5 psi, then draw the failure envelope on mohr circle and calculate the friction angle. (b) Three Direct Shear Test was performed in the lab under 40 lb, 80 lb and 120 lb normal load. Maximum Shear stress obtained from these three tests are 20 psi, 30 psi and 40 psi. Plot the failure envelope using these data and calculate the value of cohesion (c) and friction angle. The diameter of the test specimen was 2 inches. (assume c≠0) (c) The Undrained Shear Strength of a clay material obtained from unconfined compression test is 7.5 psi. Draw the mohr circle for this specimen.

Expert Solution

Ally Wells answered 1 year ago

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