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The Drained Strength of Bentonite Enhanced Sand

Mollins, L.H., Stewart, D.I. and Cousens, T.W. (1999) The Drained Strength of Bentonite Enhanced Sand. Geotechnique, 49 (4). pp. 523-528. ISSN 0016-8505

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Abstract

INTRODUCTION

Barriers with a low hydraulic conductivity are used as part of waste containment systems to prevent groundwater contamination by liquids from the waste. Commonly barriers are either a geomembrane (usually an HDPE sheet), a mineral layer or a combination of the two. Recently there has been increasing interest in the use of bentonite±sand mixtures as the mineral layer, in both land®ll liners and vertical cut-off walls, partly because they are less susceptible to frost damage and desiccation cracking than compacted clay (Dixon et al., 1985; Kraus et al., 1997). Currently there is uncertainty about the strength and bearing capacity of these materials. This note reports drained strength data for bentonite±sand mixtures and proposes that trends in these data are mainly the result of variations in the relative density of the sand.

Item Type: Article
Copyright, Publisher and Additional Information: © The Authors and the Institution of Civil Engineers, 1999.
Keywords: clays; laboratory tests; sands; shear strength.
Academic Units: The University of Leeds > Faculty of Engineering (Leeds) > School of Civil Engineering (Leeds)
The University of Leeds > Faculty of Engineering (Leeds) > School of Civil Engineering (Leeds) > Inst for Pathogen Control Engineering
Depositing User: Douglas I Stewart
Date Deposited: 21 Jun 2006
Last Modified: 08 Feb 2013 17:02
Status: Published
Publisher: Thomas Telford
Refereed: Yes
Related URLs:
URI: http://eprints.whiterose.ac.uk/id/eprint/1324

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