Interactions between PVC Geomembranes and Compacted Clays
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 127, Issue 11
Abstract
The interactions between plastic soils and polyvinyl chloride (PVC) geomembranes were studied using a direct shear device under as-compacted conditions. The PVC geomembranes had smooth or textured surfaces, and the soils were of plasticity index (PI) ranging from 35 to 100%. The peak and residual failure envelopes were expressed using Coulomb failure criteria. The adhesion and angle of friction increased for PIs up to 70% and subsequently recorded a decrease. The adhesion is larger for the peak strength compared to the residual strength, but it was the reverse for the angle of friction. The efficiency in terms of adhesion appeared more relevant than that of the angle of friction in expressing the interactions between geomembrane and cohesive soils. The smooth and textured geomembranes showed little difference in results at the residual state.
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Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 127 • Issue 11 • November 2001
Pages: 950 - 954
History
Received: May 7, 1999
Published online: Nov 1, 2001
Published in print: Nov 2001
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