A deposit of silty clay is being considered for use in constructing a containment dyke. Vane shear tests are conducted on the clay to estimate undrained shear strength. Dimensions of the field vane test appa- ratus are d = 25 mm and h = 50 mm. (a) If the Torque required to shear the clay is 6.0 N-m, estimate the lab undrained shear strength Cu in kPa. (b) The Plasticity index for this clay is 38%. Using Bjerrum's correction, estimate the field undrained shear strength Cy.

A deposit of silty clay is being considered for use in constructing a containment dyke. Vane shear tests are conducted on the clay to estimate undrained shear strength. Dimensions of the field vane test appa- ratus are d = 25 mm and h = 50 mm. (a) If the Torque required to shear the clay is 6.0 N-m, estimate the lab undrained shear strength Cu in kPa. (b) The Plasticity index for this clay is 38%. Using Bjerrum's correction, estimate the field undrained shear strength Cy.

Principles of Foundation Engineering (MindTap Course List)

9th Edition

ISBN:9781337705028

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter3: Natural Soil Deposits And Subsoil Exploration

Section: Chapter Questions

Problem 3.17P

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