Physics · Soil Mechanics
A completely saturated normally consolidated clay is tested in a triaxial test under consolidated undrained conditions. The value of pore pressure coefficient at failure, Af, is given by which of the following expressions? (Where Δσ3 = change in cell pressure; Δσ1 = change in axial stress; Δu = corresponding change in pore pressure)
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Af = Δu - Δσ1Δu - Δσ3
- 2Af = Δu - Δσ1Δσ1 - Δσ3
- 3Af = Δu - Δσ3Δu - Δσ1
- 4Af = Δu - Δσ3Δσ1 - Δσ3✓
Correct answer
Af = Δu - Δσ3Δσ1 - Δσ3
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