Lookup NU author(s): David Alder,
Emeritus Professor Colin Jones,
Dr John Lamont-Black,
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© The authors and ICE Publishing: All rights reserved, 2015. Many conventional approaches to the repair of slopes such as reducing the slope angle, installing additional drainage, soil nailing and providing stability by structural methods have their limitations and often have high environmental and economic costs. An alternative is the use of electrokinetic techniques, which, among other factors, have been shown to offer significant reductions in cost and carbon footprint. Electrokinetic Geosynthetic (EKG) slope stabilisation combines ground improvement, reinforcement and drainage into a single treatment and is applicable to cuttings, embankments and natural slopes in fine grained soils. The design parameters include anodecathode spacing, applied voltage and treatment duration for electro-osmotic ground improvement; anode orientation, diameter, bond strength and element spacing for mechanical reinforcement and also filtration functionality for active and passive drainage. Flexibility in both design and construction allow for optimisation of technical parameters with economic and environmental constraints. The key economic variables arising from the design include the supply and installation of electrodes and the duration of treatment. Owing to the multifunctional nature of the technique the geomechanical remediation is distributed amongst several factors which contribute to the overall improvement of slope stability. This method has no requirement for large, intrusive construction plant which has knock-on benefits for reducing construction safety hazards and environmental disturbance such as the removal of trees, vegetation, topsoil and habitat disruption. This paper presents the design principles that have been used by Electrokinetic Ltd. for EKG slope stabilisation and illustrates how they have been implemented during fully-commercial projects on the UK's highways network.
Author(s): Alder D, Jones CJFP, Lamont-Black J, White C, Glendinning S, Huntley D
Publication type: Conference Proceedings (inc. Abstract)
Publication status: Published
Conference Name: Geotechnical Engineering for Infrastructure and Development - XVI European Conference on Soil Mechanics and Geotechnical Engineering, ECSMGE 2015
Year of Conference: 2015
Online publication date: 23/11/2015
Acceptance date: 01/01/1900
Publisher: ICE Publishing
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