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13. A consolidated, undrained (CU) Triaxial test was performed on...
A consolidated undrained (CU) triaxial compression test (TXC) was conducted on a specimen of saturated clay....
A consolidated undrained (CU) triaxial compression test (TXC) was conducted on a specimen of saturated clay. The specimen was isotropically consolidated to a total cell pressure, σcell of 400 kPa. The backpressure was u0 = 100 kPa. At failure, the total pore water pressure was u = 90 kPa and the deviator stress was (σ1 − σ3)f = 526 kPa. Determine: a. The principal effective stresses, σ1′ and σ3′, at failure b. The friction angle, φ′ (secant method). c. The...
2. The results of a Consolidated Undrained (CU) triaxial test on a sand soil are in the figures below. The sample was subjected to a vertical load (do). At failure, the Δσ was 914 psi and the induced...
2. The results of a Consolidated Undrained (CU) triaxial test on a sand soil are in the figures below. The sample was subjected to a vertical load (do). At failure, the Δσ was 914 psi and the induced pore water pressure at failure (Au) was 683 psi. consolidated to a stress of 12 psi and then Au 6.83 psi σ,-12 psi -σ,-12 psi Sand At Failure Initial (Consolidation) A. Draw both the total and effective stress Mohr's Circles at failure...
2.If an additional CU triaxial test with pore pressure measurement is to be performed using a...
2.If an additional CU triaxial test with pore pressure
measurement is to be performed using a ?3 of 250 kPa on a specimen
identical to those in last Problem , estimate the deviator stress
(?d) and pore pressure (u) of this additional test at failure. What
would potentially be orientation of the failure plane in the
specimen?
The results below were obtained at failure in a series of consolidated-undrained (CU) triaxial tests, with pore pressure measurement, on specimens of fully...
Q3) A saturated clay specimen was undergone a consolidated undrained triaxial test with all round...
Q3) A saturated clay specimen was undergone a consolidated undrained triaxial test with all round applied pressure of 600 kN/m2. If consolidation took place against the back pressure of 200 kN/m2, draw the stress paths and calculate the value of the pore pressure coefficient A at failure. 20 Marks] 279 61-63 (kN/m2) 80 229 158 277 319 433 214 318 388
Q3) A saturated clay specimen was undergone a consolidated undrained triaxial test with all round applied pressure of 600...
PART IV SHEAR STRENGTH OF SOILS 38 pts PROBLEM 4.1 a) A triaxial consolidated drained test...
PART IV SHEAR STRENGTH OF SOILS 38 pts PROBLEM 4.1 a) A triaxial consolidated drained test is performed on a NC clay with ?.-700 kPa and uo-200. The additional axial stress applied through the piston during the shear phase is 1130 kPa. What is the angle of internal friction of the clay (assume c'-0)? Draw total and effective stress Mohr circles for pre-shear and failure conditions. Indicate position of failure plane b) A duplicate specimen is tested undrained following identical...
Hg question A consolidated-drained triaxial test was conducted on saturated normally-consolidated clay sample. The effective confining...
Hg question A consolidated-drained triaxial test was conducted on saturated normally-consolidated clay sample. The effective confining stress was 200 kPa. The specimen failed at a deviatoric stress, (40), of 538 kPa. b. Determine the shear stress on the failure plane at failure. Use c = 0. Paragraph - BIE D Previous page Next page
A consolidated undrained triaxial test on a specimen of saturated clay was carried out under an all-around pressure of 400kPa. The following results were recorded during the test. 319 158 279 80 214...
A consolidated undrained triaxial test on a specimen of saturated clay was carried out under an all-around pressure of 400kPa. The following results were recorded during the test. 319 158 279 80 214 0 (kPa) u (kPa) 0 188 118 233 29 Li (10 marks) Draw the total and effective stress path. a. (3 marks) Give the value of the pore water pressure coefficient A at failure. b. / c) Deduce from the stress paths and pore pressure coefficient A...
A CU triaxial test was carried out on a silty clay that was isotropically consolidated using a cell pressure of 125 kPa. The following data were obtained: Axial load Axial strain, s, (6) (kPa) Au...
A CU triaxial test was carried out on a silty clay that was isotropically consolidated using a cell pressure of 125 kPa. The following data were obtained: Axial load Axial strain, s, (6) (kPa) Au (kPa) 5.5 11.0 24.5 28.5 35.0 50.5 85.0 105.0 120.8 0.05 0.12 0.29 0.38 0.56 1.08 2.43 4.02 9.15 4.0 8.6 19.1 29.3 34.8 41.0 49.7 55.8 9.0 (a) Plot the deviatoric stress against axial strain and excess porewater pressure against axial strain. (b) Determine...
Consolidated-undrained triaxial tests (with pore pressure measurem on a fully saturated clay. The results are as...
Consolidated-undrained triaxial tests (with pore pressure measurem on a fully saturated clay. The results are as follows: 03 (kPa) 150 300 450 600 q (kPa) 103 202 305 410 u (kPa) 82 169 252 331 Calculate the effective shear strength parameters, c' and '.
8. A sandy soil specimen is subjected to a Consolidated Drained (CD) triaxial test. Confining pressure...
8. A sandy soil specimen is subjected to a Consolidated Drained (CD) triaxial test. Confining pressure of 500 kPa is applied to the cell and the sample was sheared to failure. The deviatoric stress at failure was recorded as 1400 kPa. Determine the principal stresses at failure and the angle of shearing resistance for this soil. (20 points)
2. The results of a Consolidated Undrained (CU) triaxial test on a sand soil are in the figures below. The sample was subjected to a vertical load (do). At failure, the Δσ was 914 psi and the induced pore water pressure at failure (Au) was 683 psi. consolidated to a stress of 12 psi and then Au 6.83 psi σ,-12 psi -σ,-12 psi Sand At Failure Initial (Consolidation) A. Draw both the total and effective stress Mohr's Circles at failure...
2.If an additional CU triaxial test with pore pressure
measurement is to be performed using a ?3 of 250 kPa on a specimen
identical to those in last Problem , estimate the deviator stress
(?d) and pore pressure (u) of this additional test at failure. What
would potentially be orientation of the failure plane in the
specimen?
The results below were obtained at failure in a series of consolidated-undrained (CU) triaxial tests, with pore pressure measurement, on specimens of fully...
Q3) A saturated clay specimen was undergone a consolidated undrained triaxial test with all round applied pressure of 600 kN/m2. If consolidation took place against the back pressure of 200 kN/m2, draw the stress paths and calculate the value of the pore pressure coefficient A at failure. 20 Marks] 279 61-63 (kN/m2) 80 229 158 277 319 433 214 318 388
Q3) A saturated clay specimen was undergone a consolidated undrained triaxial test with all round applied pressure of 600...
PART IV SHEAR STRENGTH OF SOILS 38 pts PROBLEM 4.1 a) A triaxial consolidated drained test is performed on a NC clay with ?.-700 kPa and uo-200. The additional axial stress applied through the piston during the shear phase is 1130 kPa. What is the angle of internal friction of the clay (assume c'-0)? Draw total and effective stress Mohr circles for pre-shear and failure conditions. Indicate position of failure plane b) A duplicate specimen is tested undrained following identical...
Hg question A consolidated-drained triaxial test was conducted on saturated normally-consolidated clay sample. The effective confining stress was 200 kPa. The specimen failed at a deviatoric stress, (40), of 538 kPa. b. Determine the shear stress on the failure plane at failure. Use c = 0. Paragraph - BIE D Previous page Next page
A consolidated undrained triaxial test on a specimen of saturated clay was carried out under an all-around pressure of 400kPa. The following results were recorded during the test. 319 158 279 80 214 0 (kPa) u (kPa) 0 188 118 233 29 Li (10 marks) Draw the total and effective stress path. a. (3 marks) Give the value of the pore water pressure coefficient A at failure. b. / c) Deduce from the stress paths and pore pressure coefficient A...
A CU triaxial test was carried out on a silty clay that was isotropically consolidated using a cell pressure of 125 kPa. The following data were obtained: Axial load Axial strain, s, (6) (kPa) Au (kPa) 5.5 11.0 24.5 28.5 35.0 50.5 85.0 105.0 120.8 0.05 0.12 0.29 0.38 0.56 1.08 2.43 4.02 9.15 4.0 8.6 19.1 29.3 34.8 41.0 49.7 55.8 9.0 (a) Plot the deviatoric stress against axial strain and excess porewater pressure against axial strain. (b) Determine...
Consolidated-undrained triaxial tests (with pore pressure measurem on a fully saturated clay. The results are as follows: 03 (kPa) 150 300 450 600 q (kPa) 103 202 305 410 u (kPa) 82 169 252 331 Calculate the effective shear strength parameters, c' and '.
8. A sandy soil specimen is subjected to a Consolidated Drained (CD) triaxial test. Confining pressure of 500 kPa is applied to the cell and the sample was sheared to failure. The deviatoric stress at failure was recorded as 1400 kPa. Determine the principal stresses at failure and the angle of shearing resistance for this soil. (20 points)
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