15. Vane Shear Test
The vane shear test is a method used to determine the undrained shear strength of cohesive soils, particularly in very soft to medium conditions. The test involves inserting a vane into the soil and applying torque to measure resistance until failure occurs. Various distributions of shear strength mobilization are proposed, affecting the calculation of torque necessary for soil failure.
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What we have learnt
- The vane shear test provides reliable results for determining undrained shear strength in cohesive soils.
- Torque is applied to a soil-inserted vane to measure resistance and calculate shear strength.
- Different shear strength mobilization distributions influence the torque required for soil failure.
Key Concepts
- -- Vane Shear Test
- A test that measures the undrained shear strength of cohesive soils by applying torque to a vane inserted into the soil.
- -- Undrained Shear Strength
- The shear strength of saturated soil when it is not allowed to consolidate and drain during shear.
- -- Shear Strength Mobilization
- The distribution of shear strength across the soil column, which can be triangular, uniform, or parabolic.
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