›› 2005, Vol. 26 ›› Issue (9): 1363-1368.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Characteristics of collapsibility coefficient curves of loess during moistening and demoistening process

ZHANG Mao-hua1, XIE Yong-li2, LIU Bao-jian2   

  1. 1. School of Civil Engineering, Northeast Forestry University, Harbin 150040, China; 2. School of highway, Chang’an University, Xi’an 710064, China
  • Received:2004-04-08 Online:2005-09-10 Published:2013-12-30

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Abstract: The behavior of undisturbed loess in the case of moistening or demoistening is investigated with single-line and double-line uniaxial compression test. According to the experimental results, the characteristics of collapsible deformation of loess changing with saturation level and pressure are presented. The collapsible deformation properties of loess during moistening or demoistening process and the influence of different stress-paths on collapse deformation characters of loess are analyzed. It is indicated that collapsibility coefficient curves can display different characteristics for different test method. The collapsibility of single-line method is larger than that of double-line method for lower initial moisture content, and is smaller than that of double-line method for higher initial moisture content. For certain value of initial moisture content in between, collapsibility coefficient curves of the two methods will intersect. This intersection phenomenon is caused by special structure of loess. Finally, the relation between collapsibility coefficient and initial moisture content is discussed.

Key words: collapsible loess, moistening or demoistening deformation, collapsibility coefficient curves, single-line method, double- line method, undisturbed loess, uniaxial compression test

CLC Number: 

  • TU 444
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
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