Shear Behavior of Compacted Rubber Fiber-Clay Composite in Drained and Undrained Loading
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 133, Issue 7
Abstract
The ductility, toughness, and resistance to tensile cracking of clays can be improved with the inclusion of short fibers. Tire buffings are derived from the tire retread process and because of their elongated shape, may be used as fiber inclusions. The objective of this study was to evaluate the drained and undrained shear strength of mixtures of clay and tire buffings. Mixtures of silty low plasticity kaolinitic clay and 10% by dry weight of tire buffings were compacted at both Standard and Modified compaction energy. Consolidated-drained and consolidated-undrained triaxial tests were run at confining stresses ranging from . Preshear and postshear permeability tests were conducted. Results showed that the peak strength of the composite is comparable to or greater than that of clay alone when tested at confining stresses below . Above this threshold, the presence of inclusions tends to degrade the strength of the clay. Changes in permeability were not significant.
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Information
Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 133 • Issue 7 • July 2007
Pages: 767 - 781
Copyright
© 2007 ASCE.
History
Received: Nov 15, 2005
Accepted: Jan 5, 2007
Published online: Jul 1, 2007
Published in print: Jul 2007
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