2. An undisturbed sample of normally consolidated, homogeneous clay is obtained from a depth of 10 ft. below the ground

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2 An Undisturbed Sample Of Normally Consolidated Homogeneous Clay Is Obtained From A Depth Of 10 Ft Below The Ground 1 (71.23 KiB) Viewed 27 times

2. An undisturbed sample of normally consolidated, homogeneous clay is obtained from a depth of 10 ft. below the ground surface, and two triaxial test specimens are prepared from the sample. A consolidated drained triaxial test is performed on the first sample, with an all-around pressure of 1000 psf. Failure occurs at an applied axial stress (Aq) of 2500 psf. Sketch the Mohr's circle at failure and determine the corresponding angle of internal friction. A consolidated undrained test is performed on the second sample with the same all-around pressure as in the first test. Failure occurs at an applied axial stress (Ag) of 1800 psf. Sketch the Mohr's circle at failure and determine the undrained shear strength. Using Mohr's circles, determine the effective major and minor principle stresses at failure for the CU test above, and indicate the magnitude of the pore water pressure at failure.