CEEN 641 – ADVANCED SOIL MECHANICS HOMEWORK ASSIGNMENT #11 1. As presented in the previous homework assignment, two isotropically consolidated-undrained triaxial shear tests with pore pressure measurements (CUPP) were conducted on samples of remolded clay. The consolidation pressures were 1440 and 2880 psf. Using the axial strain, deviator, and pore pressure data in the attached spreadsheet file: a. Develop a single plot showing q vs. p and q vs. p’ for each test in its entirety. Plot axes to approximately the same scale. (Note that the resulting lines are total and effective stress paths, respectively). b. Identify the K f line. c. Determine Mohr-Coulomb shear strength parameters in terms of both total and effective stresses using p-q and p’-q values. (When doing this, consider your answers from the previous homework assignment). d. Discuss the behavior illustrated by the stress paths shown on the plot (i.e., describe why the total and effective stress paths (TSP and ESP) are shaped as they are).
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Triaxial shear test, A. Draw Mohr, direct shear test, previous homework assignment