A sample of saturated normally consolidated clay was isotropically consolidated to a cell pressure of 300 kPa. The sample then was subjected to a standard consolidated undrained test. During this test, the sample failed, when che deviator stress was 200 kPa and the pore water pressure reached 150 kPa. a) Calculate the undrained cohesion. ɔ) Determine the effective friction angle of soil.

Principles of Geotechnical Engineering (MindTap Course List)
9th Edition
ISBN:9781305970939
Author:Braja M. Das, Khaled Sobhan
Publisher:Braja M. Das, Khaled Sobhan
Chapter12: Shear Strength Of Soil
Section: Chapter Questions
Problem 12.18P
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Solve all parts (a, b, c) 

A sample of saturated normally consolidated
clay was isotropically consolidated to a cell
pressure of 300 kPa. The sample then was
subjected to a standard consolidated undrained
test. During this test, the sample failed, when
the deviator stress was 200 kPa and the pore
water pressure reached 150 kPa.
a) Calculate the undrained cohesion.
b) Determine the effective friction angle of soil.
c) What is the volumetric strain in this standard
consolidated undrained test.
Transcribed Image Text:A sample of saturated normally consolidated clay was isotropically consolidated to a cell pressure of 300 kPa. The sample then was subjected to a standard consolidated undrained test. During this test, the sample failed, when the deviator stress was 200 kPa and the pore water pressure reached 150 kPa. a) Calculate the undrained cohesion. b) Determine the effective friction angle of soil. c) What is the volumetric strain in this standard consolidated undrained test.
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