Research Article
Jan 1969
Volume Change Characteristics of Unsaturated Clay
Authors: Laing Barden, Anthony O. Madedor, and Geoffrey R. SidesAuthor Affiliations
Publication: Journal of the Soil Mechanics and Foundations Division
Volume 95, Issue 1
Abstract
Compression tests under controlled effective stress paths show the stress path independence of volumetric strain and degree of saturation. Stress path dependency appears to be caused by a reversal in the direction of saturation. The swelling process does not in itself appear to introduce an important path dependency. The collapse mechanism is controlled by a potentially unstable structure, a high applied stress and a high suction pressure. The absence of one of these three factors removes the possibility of significant collapse. The effect of molding water content and compaction method on the structure of compacted clay is illustrated by the different compression behavior of clays compacted dry and wet of optimum. The compression behavior is treated best in terms of the separate components of applied stress and suction pressure, and for one-dimensional compression, the stress-strain relationship for a clay can be stated in a simple form.
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Information
Published In
Journal of the Soil Mechanics and Foundations Division
Volume 95 • Issue 1 • January 1969
Pages: 33 - 51
Copyright
© 1969 American Society of Civil Engineers.
History
Published in print: Jan 1969
Published online: Feb 12, 2021
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Authors
Affiliations
Laing Barden
Sr. Lecturer in Soil Mech., Univ. of Manchester, England
Anthony O. Madedor
Engr., The Federal Ministry of Works, Lagos, Nigeria
Geoffrey R. Sides
Lecturer in Soil Mech., Salford Univ., England
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