A series of consolidated-drained (CD) triaxial tests were performed on the soil with same initial density. Each test was continued until failure. Following data was recorded. Test Number 1 2 3 03' (kPa) 200 300 400 0₁' (kPa) 570 875 1162 Plot the relevant Mohr stress circles and determine effective/drained shear strength parameters.

A series of consolidated-drained (CD) triaxial tests were performed on the soil with same initial density. Each test was continued until failure. Following data was recorded. Test Number 1 2 3 03' (kPa) 200 300 400 0₁' (kPa) 570 875 1162 Plot the relevant Mohr stress circles and determine effective/drained shear strength parameters.

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 10.20P

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A normally consolidated soil was subjected to tri-axial test with the following data: cell pressure= 320kPa; The specimen failed when the deviator stress is 460 kPa. Compute the angle of resistance in degrees.
A normally consolidated soil was subjected to tri-axial test with the following data: cell pressure= 320 kPa; The specimen failed when the deviator stress is 460 kPa. Compute the shear stress in kPa on the failure plane. Include fbd.
Question 2 The result presented in Table Q2a were obtained from a consolidated drained (CD) triaxial test on a normally consolidated clay sample of 75mm height x 38mm diameter tested at a confining pressure of 50 kPa. Table Q2a. CD triaxial test result Axial strain (%) 1 2 5 10 15 Applied force (kN) 0.01 0.03 0.05 0.08 0.10 Page 3 of 6 (a) Draw the Mohr circle for each stress state in the sample and the total stress path (TSP) throughout the test and determine the slope of the TSP to the horizontal.
please help me... If a soil sample tested in a direct shear box of 60 mm by 60 mm and the maximum readings for normal loads of 0.3, 0.5 and 1.0kN were 202, 265 and 511 kN, determine the strength parameters corresponding to effective stress. Please find: 1) UU test; Unconsolidated Untrained (Q-test or quick test) 2) CD test; Consolidated Drained ( S-test or slow test) 3) CU test; Consolidated Untrained (R-test) 4) UC test; Unconfined Compression (σ_3=0) Thank you..
A CU triaxial test was carried out on a silty clay that was isotopically consolidated using a cell pressure of 125 kPa. The following data were obtained: Axial load (kPa) 0 5.5 11.0 24.5 28.5 35.0 50.5 85.0 105.0 120.8 Axial strain, &₁ (%) 0 0.05 0.12 0.29 0.38 0.56 1.08 2.43 4.02 9.15 Au (kPa) 0 4.0 8.6 19.1 29.3 34.8 41.0 49.7 55.8 59.0 (a) Plot the deviatoric stress vs. axial strain and excess porewater pressure vs. axial strain, respectively. (b) Determine the undrained shear strength (sµ). (Note: we assume that the sample reaches failure). (c) Determine the total principal stresses (0₁,03) and the effective principal stresses (0₁, 03') at the failure, respectively.
(a) A dry sand sample is tested in direct shear.The test procedure includes having a normal(compressive) stress of 200 kPa imposedwhile the sample undergoes shearing. Thesample fails when the shear stress reaches135 kPa. From this data, determine theangle of internal friction o for the soil.(b) A second sample of the same sand is also tobe tested in direct shear, but the applied nor-mal (compressive) stress will be 145 kPa.What shear stress is expected to cause thesample to fail?
A normally consolidated soil was subjected to tri-axial test with the following data: cell pressure= 320 kPa; The specimen failed when the deviator stress is 460 kPa. Compute the shear stress in kPa on the failure plane. Show diagram
A series of direct shear tests has been performed on a dense well-graded sand. All tests were performed on 3.00-in. diameter, 1.25 in. tall cylindrical samples, and were run slowly enough to produce drained conditions. The results of these tests are summarized in the following table: Test Number Normal Load (lb) Shear Load at Failure (lb) 1 100 84 2 200 159 3 400 319 Assuming the shear area remains constant during the test, determine the effective cohesion and effective friction angle from these test results. What values of these parameters would you expect? Are the test results consistent with your expectations? What values would you use for design?
3 A sample of soil was subjected to a series of triaxial tests. The results were as shown in the table. If a third test is made with a cell pressure of 250 kPa. Determine the value of the maximum principal stress (in kPa) for the third test. 03 (kPa) 60 130 0₁ (kPa) 165 280 The value must be a number
Import your data for FREE Buy now c. An undisturbed soil sample, 110 mm in diameter and 220 mm in height, was tested in a triaxial machine. The sample sheared under an additional axial load of 3.35 kN with a vertical deformation of 21 mm. The failure plane was inclined at 50° to the horizontal and the cell pressure was 300 kN/m². Draw the Mohr circle diagram representing the above stress conditions, and from it determine: Coulomb's equation for the shear strength of the soil, in terms of total stress; the magnitude and obliquity of the resultant stress on the failure plane. ii. A further undisturbed sample of the soil was tested in a shear box under the same drainage conditions as used for the previous test. If the area of the box was 3600 mm² and the normal load was 500 N, what would you expect the failure stress to have been? Q Search IN 9 quickbooks N quickbooks in reports 9:52 an 29/04/202
A consolidated drained tri-axial test was conducted on a normally consolidated day. The results were as foHows: 03 = 300 kPa (confining pressure) Deviators stress = 300 kPa o Compute the angle of shearing resistance. e Compute the angle that the failure plane makes with the major principal. stress. Compute the shear stress on the failure plane.
A direct shear test was conducted on a dried sand sample in a test box of 60mm x 60mm normal load of 400N. The soil sample failed at an applied shear force of 250N. a. Determine the shear strength parameters of the soil. b. Estimate the required shear force to cause a shear failure under a normal load of 600N. (Show all working calculations.)