Research Article
Apr 1973
Chemico-Osmotic Effects in Fine-Grained Soils
Publication: Journal of the Soil Mechanics and Foundations Division
Volume 99, Issue 4
Abstract
A theory to describe the simultaneous coupled diffusional flow of salt and water in soils is summarized. Examination of the coupling effects indicated by the theory and a computer analysis of consolidation caused by chemico-osmotic coupling shows that the effects of coupling should increase as soil void ratio decreases and soil compressibility and salt concentration differences increase. Test results have shown that chemico-osmotic effects do not exist, and the rates of solution flow are in reasonable accord with theoretical predictions. Chemico-osmotic consolidation is likely to be small for most soils, except for very fine-grained active clays like bentonite. However, these and other studies have shown that chemico-osmotic coupling is capable of moving soil pore water and dissolved salts and that chemico-osmotic soil stabilization might be feasible in certain cases.
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Published In
Journal of the Soil Mechanics and Foundations Division
Volume 99 • Issue 4 • April 1973
Pages: 307 - 322
Copyright
© 1973 American Society of Civil Engineers.
History
Published in print: Apr 1973
Published online: Feb 12, 2021
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James K. Mitchell, F.ASCE
Prof. of Civ. Engrg., Univ. of California, Berkeley, Calif.
James A. Greenberg
Program Analyst, Health Services Admin., Office of Program Analysis, New York, N.Y.
Paul A. Witherspoon
Prof. of Civ. Engrg., Univ. of California, Berkeley, Calif.
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Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
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