A fully saturated cylindrical triaxial sample of clay soil has initial dimensions of 38mm in diameter by 76mm long. A quick undrained triaxial test is conducted on the specimen where the cell pressure is 200 kN/m2. In this the deviator stress at failure is 78 kN/m2. After the triaxial test, a water content test is conducted on the entire sample. The combined weight of the wet sample and sample container was 183.3 g. The combined weight of the oven dried sample and sample container was 149.4 g. The sample containerweighs 10.9 g. The soil solids specific gravity is 2.65. Note: If it is appropriate you may assume that g=10 m/s2 and thus that gw=10 kN/m3. What is the undrained strength of the soil? Also, what are the water content of the soil, its total (or bulk) unit weight, and its voids ratio?
A fully saturated cylindrical triaxial sample of clay soil has initial dimensions of 38mm in diameter by 76mm long. A quick undrained triaxial test is conducted on the specimen where the cell pressure is 200 kN/m2. In this the deviator stress at failure is 78 kN/m2. After the triaxial test, a water content test is conducted on the entire sample. The combined weight of the wet sample and sample container was 183.3 g. The combined weight of the oven dried sample and sample container was 149.4 g. The sample container
weighs 10.9 g. The soil solids specific gravity is 2.65.
Note: If it is appropriate you may assume that g=10 m/s2 and thus that gw=10 kN/m3.
What is the undrained strength of the soil? Also, what are the water content of the soil, its total (or bulk) unit weight, and its voids ratio?
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