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, E₁ (%) 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 (su). (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 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, E₁ (%) 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 (su). (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.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Question

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,
E₁ (%)
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 (su). (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.

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