Physicochemical and Engineering Behavior of Cement Treated Clays
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 130, Issue 7
Abstract
This paper examines the relationship between the microstructure and engineering properties of cement-treated marine clay. The microstructure was investigated using x-ray diffraction, scanning electron microscopy, pH measurement, mercury intrusion porosimetry, and laser diffractometric measurement of the particle size distribution. The engineering properties that were measured include the water content, void ratio, Atterberg limit, permeability, and unconfined compressive strength. The results indicate that the multitude of changes in the properties and behavior of cement-treated marine clay can be explained by interaction of four underlying microstructural mechanisms. These mechanisms are the production of hydrated lime by the hydration reaction which causes flocculation of the illite clay particles, preferential attack of the calcium ions on kaolinite rather than on illite in the pozzolanic reaction, surface deposition and shallow infilling by cementitious products on clay clusters, as well as the presence of water trapped within the clay clusters.
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Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 130 • Issue 7 • July 2004
Pages: 696 - 706
Copyright
Copyright © 2004 American Society of Civil Engineers.
History
Received: Feb 8, 2002
Accepted: Nov 25, 2003
Published online: Jun 15, 2004
Published in print: Jul 2004
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