Geotechnical and Geological Engineering

, Volume 37, Issue 6, pp 4649–4673 | Cite as

Enhanced Engineering Characteristics of Soils by Electro-Osmotic Treatment: An Overview

  • B. K. Pandey
  • S. RajeshEmail author
State-of-the-Art Review


The electro-osmotic treatment for stabilizing fine-grained soils is gaining importance in the field of geotechnical engineering. There is absolute evidence that during the electro-osmotic treatment, the basic index, physicochemical and engineering properties of the soils was found to be modified. A review of the enhanced engineering characteristics of soils due to electro-osmotic treatment is presented in this paper. In addition, a brief description of the critical factors that affect the efficiency of electro-osmotic treatment is presented. This review intends to summarize the results obtained from the several field-based case studies and laboratory-based experimental studies to understand the variation in the water content, Atterberg limits, permeability, seepage, consolidation, shear strength, mineralogical and physicochemical characteristics of the soil due to electro-osmotic treatment. Based on the review, it can be inferred that usage of electro-osmotic treatment for stabilizing the fine-grained soils is beneficial, and its higher efficiency can be obtained by selecting suitable electrodes and devising the scheme appropriately for the polarity reversal and current intermittences.


Soft soil Soil improvement Electro-osmotic treatment Electro-osmosis Voltage gradient 





Electrical field intensity or voltage gradient


The standard electrode potential


Energy consumed




Electro-osmotic treatment


Electrical vertical drains


Electrokinetic geosynthetics




Electrical conductivity of the soil


The coefficient of electro-osmotic permeability


Coefficient of hydraulic permeability


Length between the electrodes


Porosity of the soil


Type of gradient


Unit power consumption


Percentage reduction in water content


Total time


Sample volume


Undrained shear strength increment


Mean applied voltage


Type of flow




Coupling coefficient


Electrical resistance


Permittivity of the water


Zeta potential of the soil


Viscosity of the pore fluid


Unit weight of water


Effective stress increment



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Authors and Affiliations

  1. 1.Department of Civil EngineeringIndian Institute of Technology KanpurKanpurIndia

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