Electrokinetic geosynthetics in hydraulic applications

Jones, Cliff B.; Lamont-Black, J; Glendinning, S. G.

doi:10.1016/j.geotexmem.2010.11.011

Cited by 108 publications

(38 citation statements)

References 7 publications

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“…The electroosmotic permeability of the soils is determined based on Darcy's law from the following equation given by Jones et al (2011): where Q e is the volume of the dewatered water per unit time in seconds, i e is the voltage gradient which is the change of voltage (in this study a constant voltage of 30 V is applied) over the distance between electrodes which is changing as soil settles and the cathode which is located on the top of the sediments moves downward towards the anode. And A is the cross-sectional area of the soil specimen.…”

Section: Electroosmotic Permeabilitymentioning

confidence: 99%

“…Chew et al (2004) performed a field trial on electrokinetic consolidation of the soft clay using electric vertical drains and observed a significant improvement in shear strength. Another field application of this method which is done by Jones et al (2011) is to remediate the Victorian embankment in London that was suffering from excess pore water pressure that was resulting in its failure. With use of electrokinetic stabilization, permanent improvement is obtained using electrokinetic geosynthetics (EKG).…”

Section: Introductionmentioning

confidence: 99%

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Experimental study on intermittent electroconsolidation of singly and doubly drained dredged sediments

Malekzadeh¹,

Sivakugan²

2016

International Journal of Geotechnical Engineering

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Electroconsolidation or electroosmosis of the soil is the movement of water from anode to the cathode when the electric current is applied to the soil through electrodes. The flow of water to the cathode is due to the electroosmosis (movement of water), electrophoresis (movement of soil particles), and electromigration of ions. In reclamation areas when the sediments of high moisture content are poured into the paddocks, they undergo a sedimentation process until the moisture content of the sediments reduces and the dredged sediments settle. Construction on these areas is not possible until the soil gains enough strength through consolidation, which takes a long time due to its low permeability. In this study, the potential application of electrokinetic stabilization to accelerate the settlement and dewatering of dredged sediments is investigated, along with the effect of irregular intermittent electric potential, type of drainage (singly and doubly), and efficiency of the method based on power consumption and soil resistivity.

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Section: Electroosmotic Permeabilitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Experimental study on intermittent electroconsolidation of singly and doubly drained dredged sediments

Malekzadeh¹,

Sivakugan²

2016

International Journal of Geotechnical Engineering

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“…1). Such enhancement of mass flux is independent of hydraulic conductivity (Jones et al, 2011), and hence is especially attractive for remediation of contaminated aquifer with fine-grained soils (i.e., with lm-level or smaller pores) (Wick, 2009). …”

Section: How Can Electrochemical Systems Contribute?mentioning

confidence: 99%

Electro-assisted groundwater bioremediation: Fundamentals, challenges and future perspectives

2015

Bioresource Technology

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“…Up to now, numerous laboratory studies have been conducted to investigate the development of pore-water pressure and the settlement of the soil mass during electroosmotic consolidation, and this technology has been employed in various geotechnical engineering field applications, including stabilisation of slopes, excavations and embankments, controlling of groundwater flow, increasing of pile capacity, strengthening of clays, and dewatering of tailings and sludge (Casagrande, 1983;Lo & Ho, 1991;Glendinning et al, 2005;Zhuang & Wang, 2007;Jones et al, 2008;Lamont-Black & Weltman, 2010;Jeyakanthan et al, 2011). Various techniques have been developed to improve the efficiency of electro-osmotic consolidation, including electrode reversal, intermittent electrical current, chemical treatment of soil-electrode contact and electro-kinetic geosynthetics (EKG) (Wan & Mitchell, 1976;Micic et al, 2001;Lefebvre & Burnotte, 2002;Glendinning et al, 2005Glendinning et al, , 2008Fourie et al, 2007;Jones et al, 2008Jones et al, , 2011.…”

Section: Introductionmentioning

confidence: 99%

Mathematical model of electro-osmotic consolidation for soft ground improvement

Hu¹,

Wu²

2014

Géotechnique

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Electro-osmotic consolidation is an attractive, soft ground improvement technique. In this paper a theoretical model is proposed for electro-osmotic consolidation by coupling the seepage field, electric field, and the stress and strain field. The soil mass deformation, pore-water pressure and the electrical voltage are the basic variables in the governing equations. A three-dimensional numerical model based on the finite-element method was developed to simulate the electro-osmotic consolidation process, predicting the tempo-spatial variation of soil mass displacement. The numerical model is compared with previous analytical solutions. Three common electrode installation patterns are illustrated and analysed with the numerical model, and the results indicate that the triangular pattern can achieve the largest average surface settlement and the smallest differential settlement. The effect of the penetrating depth of the electrodes on the ground settlement is also investigated. An engineering field application is simulated to validate the developed numerical formulation.

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Electrokinetic geosynthetics in hydraulic applications

Cited by 108 publications

References 7 publications

Experimental study on intermittent electroconsolidation of singly and doubly drained dredged sediments

Experimental study on intermittent electroconsolidation of singly and doubly drained dredged sediments

Electro-assisted groundwater bioremediation: Fundamentals, challenges and future perspectives

Mathematical model of electro-osmotic consolidation for soft ground improvement

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