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RESEARCH ARTICLE

Structural component of the swelling pressure of calcium clays

JP Quirk and RM Pashley

Australian Journal of Soil Research 29(2) 209 - 214
Published: 1991

Abstract

The presence of a major repulsive ion-induced structural force or disjoining pressure between Ca-clay particles is demonstrated. This arises from the perturbation of the normal structure for water to distances of about 50 A. This force operates in slit-shaped pores between clay particles and is opposed principally by attractive ion-ion correlation forces in regions of clay particle overlap.

https://doi.org/10.1071/SR9910209

© CSIRO 1991

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