Stress‐Strain‐Strength Responses of Compressible Chicago Glacial Clays
Publication: Journal of Geotechnical Engineering
Volume 118, Issue 10
Abstract
The stress‐strain‐srength responses of compressible Chicago glacial clays are presented.These clays are lightly overconsolidated supra‐ or subglacial tills. Fixed piston and Shelby tube samples from various locations in the Chicago area were subjected to an extensive laboratory testing program, including index property, consolidation, direct shear, and ‐consolidated, and undrained triaxial compression and extension tests. Results of the experimental program indicated the strengths of tills can be normalized when proper consideration is given to variations in natural water content. The different undrained strengths in compression and extension indicate that the clays exhibit stress‐induced anisotropy. Initial undrained elastic moduli of the clays vary systematically with the overconsolidation ratio. Comparisons are made between strengths computed from relations based on normalized undrained strengths determined in the laboratory and those based on in‐situ tests made at several locations. These data suggest that field vane strengths represent a conservative index of undrained shear strength for these Chicago clays.
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Information & Authors
Information
Published In
Journal of Geotechnical Engineering
Volume 118 • Issue 10 • October 1992
Pages: 1607 - 1625
Copyright
Copyright © 1992 ASCE.
History
Published online: Oct 1, 1992
Published in print: Oct 1992
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