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Hg question A consolidated-drained triaxial test was conducted on saturated normally-consolidated clay sample. The effective confining...
A standard isotropically consolidated drained triaxial compression loading test (CIDC) conducted on a normally consolidated clay...
A standard isotropically consolidated drained triaxial compression loading test (CIDC) conducted on a normally consolidated clay specimen with a preshear consolidation stress s’c = 150 kPa resulted in a measured peak deviator stress (s1-s3)f = 205 kPa. a. Estimate c’ and f’ b. What would p’f, qf, Ds’1f and Ds’3f be if a standard isotropically consolidated drained triaxial compression unloading test was conducted on the same soil with s’c = 200 kPa? Symbols: s=sigma, f=phi, D=delta, Ds'=delta sigma prime,
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)
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...
The results of two drained triaxial tests on a saturated clay are given below: (a) Confining...
The results of two drained triaxial tests on a saturated clay are given below: (a) Confining pressure 69 kPa, deviator stress 213 kPa (b) Confining pressure 120 kPa, deviator stress 258.7 kPa Calculate φ and c.
soil mechanics will rate if correct 13. A consolidated, undrained (CU) Triaxial test was performed on...
soil mechanics
will rate if correct
13. A consolidated, undrained (CU) Triaxial test was performed on a normally consolidated, saturated clay. The minor principal effective stress at the end of consolidation phase, c'3c was 100 kPa. The deviatoric stress, Aod, at failure was 60 kPa. The excess pore pressure at failure, Au was 45 kPa. What is the effective friction angle, "? (a) 21 degrees (6) 26 degrees (e) 33 degrees 14. A consolidated, undrained (CU) Triaxial test was performed...
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...
(iv) A quick undrained (QU) triaxial test was conducted on a fully-saturated soft clay sample. A...
(iv) A quick undrained (QU) triaxial test was conducted on a fully-saturated soft clay sample. A confining stress (03) of 300 kPa and a vertical stress (01) of 450 kPa at failure were recorded. What is the undrained shear strength of the soft clay? (a) 150 kPa 75 kPa 300 kPa 175 kPa (c) (d) (v) With reference to Question 1(iv), if a second sample of the same clay collected at the same depth is subjected to QU test under...
Q1c.i A normally consolidated saturated clay specimen is tested in triaxial compression. With the aid of...
Q1c.i A normally consolidated saturated clay specimen is tested in triaxial compression. With the aid of clear plots describe how the stress-strain behaviour changes when the confining stress (applied by the cell fluid) is increased. (Note: The specimen has been initially brought to equilibrium under isotropic compression).
Test#1 Name CVEN 435 Page 1/8 Initials) 1. A consolidated-drained (CD) triasial test was conducted on...
Test#1 Name CVEN 435 Page 1/8 Initials) 1. A consolidated-drained (CD) triasial test was conducted on a ơ)-250 kNm, and the deviator clay. The results were as follows: confining stress at failure, (Aoah 250Nm friction.(2) angle 6 that the failure plane makes with the major principal plane, and the normal stress ơ and shear stress t on the failure plane. (Note: see Figure below for of internal (3) definition of failure plane and failure angle, 8. In a drained test,...
Problem 3: A consolidated-drained triaxial test is carried out on a sand specimen that is subjected...
Problem 3: A consolidated-drained triaxial test is carried out on a sand specimen that is subjected to 80 kN/m2 confining pressure. The vertical deviator stress was increased slowly such that there is no built-up of pore water pressure within the specimen. The specimen failed when the addition axial stress reached 240 kN/m2. Find the friction angle of the sand. If another identical sand specimen was subjected to 150 kN/m? confining pressure, what would be the deviator stress at failure.
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)
soil mechanics
will rate if correct
13. A consolidated, undrained (CU) Triaxial test was performed on a normally consolidated, saturated clay. The minor principal effective stress at the end of consolidation phase, c'3c was 100 kPa. The deviatoric stress, Aod, at failure was 60 kPa. The excess pore pressure at failure, Au was 45 kPa. What is the effective friction angle, "? (a) 21 degrees (6) 26 degrees (e) 33 degrees 14. A consolidated, undrained (CU) Triaxial test was performed...
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...
(iv) A quick undrained (QU) triaxial test was conducted on a fully-saturated soft clay sample. A confining stress (03) of 300 kPa and a vertical stress (01) of 450 kPa at failure were recorded. What is the undrained shear strength of the soft clay? (a) 150 kPa 75 kPa 300 kPa 175 kPa (c) (d) (v) With reference to Question 1(iv), if a second sample of the same clay collected at the same depth is subjected to QU test under...
Q1c.i A normally consolidated saturated clay specimen is tested in triaxial compression. With the aid of clear plots describe how the stress-strain behaviour changes when the confining stress (applied by the cell fluid) is increased. (Note: The specimen has been initially brought to equilibrium under isotropic compression).
Test#1 Name CVEN 435 Page 1/8 Initials) 1. A consolidated-drained (CD) triasial test was conducted on a ơ)-250 kNm, and the deviator clay. The results were as follows: confining stress at failure, (Aoah 250Nm friction.(2) angle 6 that the failure plane makes with the major principal plane, and the normal stress ơ and shear stress t on the failure plane. (Note: see Figure below for of internal (3) definition of failure plane and failure angle, 8. In a drained test,...
Problem 3: A consolidated-drained triaxial test is carried out on a sand specimen that is subjected to 80 kN/m2 confining pressure. The vertical deviator stress was increased slowly such that there is no built-up of pore water pressure within the specimen. The specimen failed when the addition axial stress reached 240 kN/m2. Find the friction angle of the sand. If another identical sand specimen was subjected to 150 kN/m? confining pressure, what would be the deviator stress at failure.
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