A conventional undrained triaxial compression test, with the cell pressure o, held constant, is carried out...

  

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A conventional undrained triaxial compression test, with the cell pressure o, held constant, is carried out on a sample of stiff overconsolidated clay. The stress:strain relationship is found to be linear up to failure, so it is deduced that the clay behaves as an isotropic perfectly elastic material. i. After an axial strain As, 0.9 per cent, the deviator stress is measured to be 90 kPa. For this stage of the test, calculate the values of Au, Ap, Ap', Ao, Ao, Ao, Ae, and E. ii. At this time, the axial stress and cell pressure are kept constant, and the sample is allowed to drain so that the pore pressures dissipate and the sample undergoes a volumetric strain Ae, = 0.3 per cent. What are the values of Ao, Ao, Au, Ap', Aq, Ae,, and Aɛ, for this stage of the test, and what are the values of the elastic constants K', G', E', and v'? %3D %3! A conventional undrained triaxial compression test, with the cell pressure o, held constant, is carried out on a sample of stiff overconsolidated clay. The stress:strain relationship is found to be linear up to failure, so it is deduced that the clay behaves as an isotropic perfectly elastic material. i. After an axial strain As, 0.9 per cent, the deviator stress is measured to be 90 kPa. For this stage of the test, calculate the values of Au, Ap, Ap', Ao, Ao, Ao, Ae, and E. ii. At this time, the axial stress and cell pressure are kept constant, and the sample is allowed to drain so that the pore pressures dissipate and the sample undergoes a volumetric strain Ae, = 0.3 per cent. What are the values of Ao, Ao, Au, Ap', Aq, Ae,, and Aɛ, for this stage of the test, and what are the values of the elastic constants K', G', E', and v'? %3D %3!

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a Calculate the pore water pressure Au AxBAo 05x1x 90 Au 45kPa Calculate t... View the full answer