Research Article
Jan 1969
Secondary Compression in the Shear of Clays
Publication: Journal of the Soil Mechanics and Foundations Division
Volume 95, Issue 1
Abstract
The amount of secondary deformation measured when shear-testing a laboratory sample of kaolin depends largely on its effective stress state, which may vary from a hydrostatic state of stress to stresses causing incipient failure in the specimen. Such deformation does not, however, appear to influence the basic stress-strain curve for the material, as this is essentially independent of load duration. Thus, in a limited sense, the stress-strain relationship may be considered as time-independent, Secondary deformation data from drained shear tests are decomposed into volumetric and shear components. In this way, creep in shear is interpreted as a stress-dilatancy phenomenon, and as such may be contrasted with similar relationships which describe the process of primary deformation in shear tests.
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Published In
Journal of the Soil Mechanics and Foundations Division
Volume 95 • Issue 1 • January 1969
Pages: 167 - 188
Copyright
© 1969 American Society of Civil Engineers.
History
Published in print: Jan 1969
Published online: Feb 12, 2021
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Authors
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Leonard K. Walker, AM.ASCE
NRC Research Fellow, Dept. of Civ. Engrg., Queen’s Univ., Kingston, Ontario, Canada
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