Geomechanics and Engineering

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Experimental study on deformation and strength property of compacted loess

  • Mei, Yuan (College of Civil Engineering, Xi'an University of Architecture and Technology) ;
  • Hu, Chang-Ming (College of Civil Engineering, Xi'an University of Architecture and Technology) ;
  • Yuan, Yi-Li (College of Civil Engineering, Xi'an University of Architecture and Technology) ;
  • Wang, Xue-Yan (College of Civil Engineering, Xi'an University of Architecture and Technology) ;
  • Zhao, Nan (College of Civil Engineering, Xi'an University of Architecture and Technology)
  • Received : 2015.01.30
  • Accepted : 2016.04.17
  • Published : 2016.07.25
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Abstract

A series of experimental studies are conducted on the deformation and shear strength property of compacted loess. The results reveal that the relationships of both the initial moisture content (w) and the initial degree of compaction (K) of compacted loess with cohesion (w) and the angle of internal friction (${\varphi}$) are linear. The relationship between the secant modulus ($E_{soi}$) and K is also linear. The relationship between $E_{soi}$ and w can be fitted well by a second-order polynomial. Further, when the influences of w and K are ignored, the relationship between the confined compression strain (${\varepsilon}$) and vertical pressure (p) can be expressed by a formula. A correction formula for the deformation of compacted loess caused by a change in w and K is derived on the basis of the study results.

Keywords

Acknowledgement

Supported by : National Natural Science Foundation of China

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