Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.13/45016

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Title
Natural drying of expansive soils and validity of the effective stress principle
Author/Creator
Buzzi, Olivier;  Fityus, Stephen
Institution
The University of Newcastle. Faculty of Engineering & Built Environment, School of Engineering
Description
The principle of effective stress established by Terzaghi in 1936 constitutes a milestone of soil mechanics. However, it does not apply to expansive soils for which electrochemical forces play a fundamental role. Several studies have shown the sensitivity of clay behaviour on bulk water chemistry, which is usually changed artificially. The preliminary results of air drying tests and consolidation tests performed on remolded expansive clay from Maryland, NSW are presented herein. It is shown that Maryland clay does not obey Terzaghi's principle without any artificial change of water chemistry. This occurs naturally though the drying of the soil, which induces an increase of cations concentration. The consequences in terms of geotechnical modeling are discussed.
Relation
International Symposium Drought and Constructions (SEC2008). SEC2008: International Symposium Drought and Constructions, Volume 1 (Marne-la-Vallee, France 1-3 September, 2008) p. 303-308
Relation
http://www.lcpc.fr/en/actualites/manifestation_detail.dml?id=221
Date
2008
Publisher
Editions du LCPC
Keyword(s)
geotechnical engineering;  geotechnical modeling;  expansive soils;  soil mechanics
Resource Type
conference paper
Identifier
http://hdl.handle.net/1959.13/45016
Identifier
ISBN:9782720825271
Reviewed
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Subject
"Natural drying of expansive soils and validity of the effective stress principle"
 
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