期刊
ENGINEERING GEOLOGY
卷 65, 期 4, 页码 261-267出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/S0013-7952(01)00136-3
关键词
expansive soil; soil-water characteristic curve; suction; suction strength; hyperbolic model
Nanyang expansive soil is investigated in its unsaturated state in this paper. The wetting-drying cycle tests of soil-water characteristics of Nanyang expansive soil have been performed in the laboratory. The test results show that the soil-water characteristic curve of the pre-load specimen can well reflect the soil property function of expansive soil. The strength features of the different suction states of the unsaturated expansive soil are also investigated. The hyperbolic model of the suction strength is presented and the parameters of this model are easily determined by tri-axial tests of unsaturated soils. The hyperbolic model is conveniently applied to predict suction strength of an unsaturated soil. (C) 2002 Elsevier Science B.V. All rights reserved.
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