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Electrokinetic strengthening of slopes - Case history

Lookup NU author(s): Dr John Lamont-Black, Emeritus Professor Colin Jones, David Alder

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Abstract

Traditional embankment stabilisation techniques can have severe environmental impacts during construction and frequently leave behind a stark legacy of a bare embankment unsuitable for wildlife and unsightly for local residents. Electrokinetic geosynthetic (EKG) strengthening of slopes is a multi component treatment method which includes dewatering by electro-osmosis; reinforcement; drainage and soil modification. The method offers economic and environmental benefits.This paper provides a brief review of the electrokinetic concept as it applies to failed slopes and illustrates the method with respect to the design, analysis, construction and verification of the stabilisation of a strategically important and environmentally sensitive highway embankment. The strengthening of the slope was achieved with a 29% reduction in cost and a 40% reduction in carbon footprint when compared to an adjacent embankment which had been remediated a year earlier using conventional soil nails. Following the repair the scheme was awarded an Institution of Civil Engineers Award for Innovation and a Green Apple Award for excellence in sustainable construction. (C) 2016 Elsevier Ltd. All rights reserved.

Publication metadata

Author(s): Lamont-Black J, Jones CJFP, Alder D

Publication type: Article

Publication status: Published

Journal: Geotextiles and Geomembranes

Year: 2016

Volume: 44

Issue: 3

Pages: 319-331

Print publication date: 01/06/2016

Online publication date: 04/02/2016

Acceptance date: 08/01/2016

ISSN (print): 0266-1144

ISSN (electronic): 1879-3584

Publisher: Elsevier Science Ltd.

URL: http://dx.doi.org/10.1016/j.geotexmem.2016.01.001

DOI: 10.1016/j.geotexmem.2016.01.001

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