Electro-Osmosis Applied to Unstable Embankment

by Brian A. Chappell, Sr. Geotechnical Engr.; Maunsell and Parts., Melbourne, Australia,
Peter L. Burton, Geotechnical Engr.; Maunsell and Parts., Melbourne, Australia,

Serial Information: Journal of the Geotechnical Engineering Division, 1975, Vol. 101, Issue 8, Pg. 733-740

Document Type: Journal Paper


In the course of construction of a large dry dock project in Singapore, an 8-m high cofferdam embankment was constructed by end tipping decomposed granite material into the sea. At the time of dewatering the cofferdam, large movements of the embankment occurred, and electro-osmosis was chosen as a rapid stabilization technique. The electrode layout, which was chosen after a field test, enabled stabilization to be achieved with a low power consumption of 0.5 kWhr/m³ of soil. The success of this operation has been attributed to the relatively high cationic concentration in the boundary layers of South East Asian clays.

Subject Headings: Osmosis | Construction materials | Cofferdams | Field tests | Shipyards | Seas and oceans | Dewatering | Soil tests | Singapore | Asia

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