12.14 Following are the results of consolidated-undrained triaxial tests on undisturbedsoils retrieved from a 4-m thick saturated clay layer in the field (yat = 20.7 kN/m³).ChamberDeviatorstress, (Ao),(kN/m?)Pore pressure atfailure, (Au)(kN/m?)Testpressure, o;(kN/m?)no.75166-112150295-523250410-80a. Estimate graphically the Mohr-Coulomb shear strength parameters c'and o'.b. Estimate the shear strength in the middle of the clay layer.

Answered: 12.14 Following are the results of…

Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter10: Shear Strength Of Soil

Section: Chapter Questions

Problem 10.18P

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A consolidated-undrained triaxial test was conducted on a saturated, normally consolidated clay. The test results are 03-13 lb/in2 01(failure) = 32 lb/in² Pore pressure at failure = u = 5.5 lb/in². Determine c, d, c', and '
A consolidated-undrained triaxial test was conducted on a saturated, normally consolidated clay. The test results areσ3 = 13 lb/in2σ1(failure) = 32 lb/in2Pore pressure at failure = u = 5.5 lb/in2. Determine c, Φ, c', and Φ'.
Please give me right solution according to the question. In a triaxial test on a saturated clay, the sample was consolidated under a cell pressure of 160 kPa. After consolidation the cell pressure was increased to 350 kPa, and the sample was then failed under undrained condition. If the shear strength parameters of the soil are c’ = 15.2 kPa, ϕ’ = 26°, B = 1, Af = 0.27, determine the pore pressure at the failure.
specimen In a consolidated-drained triaxial test on aclay, the failed at the deviator Stress of 124 kN/m² effective stress friction angle is known tod 31° 31 What was the effective confining pressure at failure? If the be -
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5. A consolidated, undrained triaxial test is being carried out on a normally consolidated clay where c - 0 and p'= 26'. The triaxial specimen was consolidated under a cell pressure of 300 kPa and backpressure of 80 kPa. Skempton's A parameter at failure is estimated to be 0.80. The drainage valve has since been dosed and the vertical deviator stress increased to failure. What would be the deviator stress and pore water pressure at failure?
A drained triaxial test on the normally consolidated clay showed that the failure plane makes an angle of 58 with the horizontal. If the sample was tested with a chamber confining pressure of 103.5kPA, what was the major principal stress at failure? (Unit in kPa) (Answer only number(whole number without unit)
5. A consolidated, undrained triaxial test is being caried out on a normally consolidated clay where c = 0 and 41= 26'. The triaxial specimen was consolidated under a cell pressure of 300 kPa and backpressure of 80 kPa. Skempton's A parameter at failure is estimated to be 0.80. The drainage valve has since been dosed and the vertical deviator stress increased to failure. What would be the deviator stress and pore water pressure at failure?
It is known that a particular deposit of clay has the following shear strength parameters: c' = 15 kPa, o' = 23°; Cu = 10 kPa, cu = 13° A sample of this clay is consolidated in a triaxial cell to an all-round pressure (03) of 250 kPa. The sample is then sheared by increasing 0₁, keeping 3 constant and the drainage valve closed. What is: i) ₁ at failure? ii) Pore water pressure inside the sample at failure? iii) Final values of 0₁' and 03'? iv) Value at failure of Skempton's pore pressure coefficient A?
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Three consolidated-undrained tri-axial tests were performed on samples retrieved from a 4 meter thick layer of saturated clay layer (ysat=20.7 kN/cubic meter. The top of the clay and the water level are at the ground surface. Results of these three tests are summarized in the following table: Test Chamber Pressure, o3 Deviator Stress, Aod Pore Pressure@Failure AU, (kN/sq m) -12 (kN/sq m) (kN/sq m) 1) 2) 3) a. Determine graphically the Mohr-Coulomb effective shear strength parameters c' (in kN/sq m) and o’ 80 170 -55 -85 155 300 255 415

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