GATE CE 2017 Set 1 — Question 50
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Geotechnical Engineering → Shear Strength of Soils → Effective Strength Parameters
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Question
A consolidated undrained () triaxial compression test is conducted on a normally consolidated clay at a confining pressure of . The deviator stress at failure is , and the pore-water pressure measured at failure is . The effective angle of internal friction (in degrees, up to one decimal place) of the soil is ____________
Correct answer
25.5 to 27
Solution
1.Given Data:
- Confining pressure
- Deviator stress
- Pore-water pressure at failure
- Major principal stress
- Effective major principal stress
- Effective minor principal stress
- For normally consolidated clay, effective cohesion .
- The failure criterion is:
- .
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