Geomechanics and Engineering

Volume 11, Number 1, 2016, pages 161-175

DOI: 10.12989/gae.2016.11.1.161

Experimental study on deformation and strength property of compacted loess

Yuan Mei , Chang-Ming Hu , Yi-Li Yuan , Xue-Yan Wang , Nan Zhao

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 (<i>w</i>) and the initial degree of compaction (<i>K</i>) of compacted loess with cohesion (<i>w</i>) and the angle of internal friction (<i>φ</i>) are linear. The relationship between the secant modulus (<i>E<sub>soi</sub></i>) and <i>K</i> is also linear. The relationship between <i>E<sub>soi</sub></i> and <i>w</i> can be fitted well by a second-order polynomial. Further, when the influences of <i>w</i> and <i>K</i> are ignored, the relationship between the confined compression strain (<i>ε</i>) and vertical pressure (<i>p</i>) can be expressed by a formula. A correction formula for the deformation of compacted loess caused by a change in <i>w</i> and <i>K</i> is derived on the basis of the study results.

Key Words

compacted loess; shear strength; deformation property; deformation correction formula

Address

(1) Yuan Mei, Chang-Ming Hu, Yi-Li Yuan, Xue-Yan Wang, Nan Zhao: College of Civil Engineering, Xi'an University of Architecture and Technology, Xi'an, China;<br>(2) Xue-Yan Wang: College of Environmental and Chemical Engineering, Xi'an Polytechnic University, Xi'an, China.

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