A consolidated undrained triaxial test was conducted on dense sand with a chamber confining pressure of 138 k N m2 Results showed that ' 24 and 31 Determine the deviator stress and the pore water pressure at failure If the sand were loose, what would have been the expected behavior Explain ...

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A consolidated-undrained triaxial test was conducted on dense sand with a chamber-confining pressure of 138 k N/m2.

Question:

A consolidated-undrained triaxial test was conducted on dense sand with a chamber-confining pressure of 138 k N/m2. Results showed that ϕ' = 24° and ϕ = 31°. Determine the deviator stress and the pore water pressure at failure. If the sand were loose, what would have been the expected behavior? Explain.