A sample of normally consolidated clay was subjected to a consolidated undrained triaxial compression test that was carried out until the specimen failed at a deviator stress of 50 kN/m2. The pore water pressure at failure was recorded to be 20 kN/m2 and confining pressure of 50 kN/m2 was used in the test. Determine the consolidated undrained friction angle.

A sample of normally consolidated clay was subjected to a consolidated undrained triaxial compression test that was carried out until the specimen failed at a deviator stress of 50 kN/m2. The pore water pressure at failure was recorded to be 20 kN/m2 and confining pressure of 50 kN/m2 was used in the test. Determine the consolidated undrained friction angle.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

V1
A soil has an unconfined compressive strength of 120 kN/m2. In a triaxial compression test a specimen of the same soil when subjected to a chamber pressure of 40 kN/m2 failed at an additional stress of 160 kN/m2. Determine angle of friction. Draw the Mohr Circle
A clay specimen with drained shear strength parameters of c'=5 kPa and Φ=320 is consolidated under all around pressure of 140 kPa.The specimen was then loaded axially to failure under undrained condition and failed when the principal stress diffrences reached 60 kPa.Calculate the pore pressure(u) and the pore pressure coefficient D(=A*B=Δu/Δσv) of the clay.
The results below were obtained at failure in a series of consolidated-untrained triaxial tests, with pore water pressure measurement, on specimens of a fully saturated clay. Determine the values of the shear strength parameters c' and 'If a specimen of the same soil were consolidated under an all-round pressure of 300 kN/m² and the principal stress difference applied with the all-round pressure changed to 400kN/m², what would be the expected value of principal stress difference at failure" 150 300 450 600 03 (kN/m²) 01-03 (kN/m²) u (kN/m²) 103 202 305 410 82 169 252 331
A standard specimen of cohesionless sand was tested in triaxial compression test and the sample field at a deviator stress of 450 KN/ sq-m, when the cell pressure was 100 kN/sq-m under drained condition. Find the effective angle of shearing resistance of sand. what would be the deviator stress and the Major principle stress at the failure of another identical specimen of sand if it is tested under a cell pressure of 200 KN/ sq-m ?
2. The results of a consolidated-drained triaxial test conducted on a normally consolidated clay are as follows: Chamber confining stress = 220 KPa Deviator stress at failure = 320 KPa (a) Angle of friction (b) Angle of failure (c) Normal and Shear stress on the failure plane Calculate:
Q: A consolidated-drained tri-axial test was conducted on a normally consolidated clay. The results are as following: confining stress, G3 = 150 kN/m² and deviator stress, (Aod)t = 150 kN/m². i) Determine angle of friction, q; ii) Determine angle 0 that the failure plane makes with the major principal plane; iii) Find the normal stress and the shear stress ty on the failure plane; and iv) Determine the effective normal stress on the plane of maximum shear stress. Express your results in two decimal places.
Triaxial compression test (CU) is conducted on a normally consolidated clay at a confining pressure of 100 kPa. The deviator stress at failure is 80 kPa, and the pore-water pressure measured at failure is 50 kPa. Determine the angle of internal friction.
A consolidated drained tri-axial test was conducted on a normally consolidated clay. The results as follows: Chamber confining pressure: 138 kPa Deviator Stress = 258 kPa Determine the normal stress at failure in kPa.
A consolidated-undrained test on a normally consolidate clay yield the following results: Confining Pressure = 155 KPa; Deviator Stress = 180 KPa; Pore Pressure m 79 KPa. Calculate the normal stress at the failure plane at drained condition in KPa.
A consolidated-undrained test on a normally consolidate clay yield the following results: Confining Pressure 167 KPa; Deviator Stress = 184 KPa; Pore Pressure = 74 KPa. Calculate the normal stress at the failure plane at drained condition in KPa.