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Three unconsolidated undrained compression tests are conducted on samples of the same saturated clay at confining stresses σ3 = 0, 45 and 87 kPa. Each test yielded approximately the same peak axial re- sistance of Aσ₁ = 100 kPa. (a) What is the undrained shear strength C₁ for this soil? (b) Explain why each test resulted in the same 401 despite the different initial confining stresses σ3.

Three unconsolidated undrained compression tests are conducted on samples of the same saturated clay at confining stresses σ3 = 0, 45 and 87 kPa. Each test yielded approximately the same peak axial re- sistance of Aσ₁ = 100 kPa. (a) What is the undrained shear strength C₁ for this soil? (b) Explain why each test resulted in the same 401 despite the different initial confining stresses σ3.

Structural Analysis
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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Three unconsolidated undrained compression tests onducted on samples of the same saturated clay at confining stresses σ3 = 0, 45 and 87 kPa Each test yielded approximately the same peak axial re sistance of 401 = 100 kPa. (a) What is the undrained shear strength C, for this soil? (b) Explain why each test resulted in the same 4o1 despite the different initial confining stresses o3.
Three unconsolidated undrained compression tests are conducted on samples of the same saturated clay at confining stresses σ3 = 0, 45 and 87 kPa. Each test yielded approximately the same peak axial re- sistance of Aσ₁ = 100 kPa. (a) What is the undrained shear strength C₁ for this soil? (b) Explain why each test resulted in the same 401 despite the different initial confining stresses σ3.
Transcribed Image Text:Three unconsolidated undrained compression tests are conducted on samples of the same saturated clay at confining stresses σ3 = 0, 45 and 87 kPa. Each test yielded approximately the same peak axial re- sistance of Aσ₁ = 100 kPa. (a) What is the undrained shear strength C₁ for this soil? (b) Explain why each test resulted in the same 401 despite the different initial confining stresses σ3.
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