A conventional triaxial compression (AC) test was conducted on » saturated sample of overconsolidated clay, and the following data, normalized with respect to the effective confining pressure, were obtained.
A lateral extension (LE) test was conducted on an identical specimen of the same clay. While the vertical stress was maintained constant, the cell pressure was decreased until failure occurred at the same principal stress difference as the AC specimen (A Δσ/σ'c = 2.33). From your knowledge of stress paths and soil behavior, determine
(After C. W. Lovell.)(a) the effective and total stress paths for both tests and (b) the pore pressure versus strain response of the LE test, (c) Can the Mohr-Coulomb strength parameters be determined? Why?
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