GATE CE 2018 Set 1 — Question 55
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Geotechnical Engineering → Shear Strength of Soils → Drained & Undrained Strength
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Question
A conventional drained triaxial compression test was conducted on a normally consolidated clay sample under an effective confining pressure of . The deviator stress at failure was found to be . An identical specimen of the same clay sample is isotropically consolidated to a confining pressure of and subjected to standard undrained triaxial compression test. If the deviator stress at failure is , the pore pressure developed (in kPa, up to one decimal place) is ______
Correct answer
124 to 126
Solution
1.From the drained test on normally consolidated clay ():
- Effective confining pressure
- Deviator stress
- Confining pressure
- Deviator stress
- At failure, the effective stresses satisfy:
- .
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