A FRAMEWORK FOR THE BEHAVIOR OF UNSATURATED EXPANSIVE CLAYS

被引：588

作者：

GENS, A

ALONSO, EE

机构：

来源：

CANADIAN GEOTECHNICAL JOURNAL | 1992年 / 29卷 / 06期

关键词：

CAPILLARITY; CLAY; MODEL; UNSATURATION; SUCTION; EXPANSIVE SOILS;

D O I：

10.1139/t92-120

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

The paper presents a framework for describing the mechanical behaviour of unsaturated expansive clays. It is an extension of an existing formulation developed for unsaturated soils of low activity. The extended framework is based on the distinction within the material of a microstructural level where the basic swelling of the active minerals takes place and a macrostructural level responsible for major structural rearrangements. By adopting simple assumptions concerning the coupling between the two levels, it is possible to reproduce major features of the behaviour of unsaturated expansive clays. Some selected qualitative comparisons between model predictions and experimental results reported in the literature are presented. Despite the simplified hypotheses made, a very encouraging agreement is obtained.

引用

页码：1013 / 1032

页数：20

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