Paper Title:
Research on Un-Linear Deformation Characteristics of Unsaturated Clay with General Triaxial Test
  Abstract

Difficult in soil-water characteristic curve achieved, existence of non-uniqueness and indistinct in influence of unlinear deformation characteristics of soil about density and water content, deformation characteristics of unsaturated soil were studied difficultly with general triaxial test, thus direct application of unlinear Duncan-Chang model in unsaturated soil was restricted. General triaxial tests with combined dry density and water content are carried out, changing rules of parameters of Duncan-Chang model are summarized, mathematical functions between dry density, saturation and parameters of the model are established. Analysis shows that deformation characteristics of unsaturated clay are influenced obviously by saturation and dry density. Among them, the larger the saturation, the higher strain becomes under the condition of the same dry density and main stress difference, and the less the dry density, the higher strain becomes under the condition of the same saturation and main stress difference. Moreover, the main parameters of Duncan-Chang model keep close correction with dry density and saturation, and the both mutual effect can be expressed by multiplication. This shows that mechanical characteristics of unsaturated soil can be studied with general triaxial test, thus it will be used easily in project.

  Info
Periodical
Advanced Materials Research (Volumes 243-249)
Edited by
Chaohe Chen, Yong Huang and Guangfan Li
Pages
3117-3122
DOI
10.4028/www.scientific.net/AMR.243-249.3117
Citation
X. Z. Shen, J. X. Zhang, M. Zhang, "Research on Un-Linear Deformation Characteristics of Unsaturated Clay with General Triaxial Test", Advanced Materials Research, Vols. 243-249, pp. 3117-3122, 2011
Online since
May 2011
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Price
$32.00
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