Question
Download Solution PDFFor a saturated cohesive soil, a triaxial test yields the angle of internal friction (ϕ) as zero. The conducted test is
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFFor a saturated cohesive soil, a triaxial test yields the angle of internal friction (φ) as zero. The conducted test will be Unconsolidated Undrained (UU) test.
Unconsolidated Un-drained (UU) Test: In this test expulsion of pore water is not permitted in both the stages. It is used for clays in short term analysis for clays under un-drained conditions at fast loading rate.
Consolidated Drained (CD) Test: In this test expulsion of pore water is permitted in both the stages. It is used for short term and long term stability analysis in saturated sands and long term stability analysis in clays.
Consolidated Un-drained (CU) Test: In this test, expulsion of pore water is permitted in 1st stage but not in second stage. It is used for investigation of safety of earthen dam which may occur due to sudden drawdown of water table.
Unconfined Compression (UC) Test: In this test, cell pressure is kept zero and specimen is loaded vertically till it fail in shear. This is performed generally for highly cohesive clays having ϕ = 0.Last updated on Jun 14, 2025
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