›› 2010, Vol. 31 ›› Issue (8): 2448-2452.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Influnce of freeze-thaw on shear strength properties of saturated silty clay

YU Lin-lin1，XU Xue-yan1，QIU Ming-guo1, LI Peng-fei2，YAN Zi-li 2   

  1. 1.School of Civil Engineering，Harbin Institute of Technology，Harbin 150090，China; 2 No.2 Engineering Co. Ltd., CCCC Tunnel Engineering Co. Ltd.，(Xi’an), Xi’an 710075, China
  • Received:2009-02-10 Online:2010-08-10 Published:2010-08-30

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Abstract:

In order to reveal the regular influence of freezing-thawing cycle on shearing strength properties of road slope soil in seasonally frozen area, unconsolidated-undrained test was carried out on saturated undisturbed silty clay under different experimental conditions such as freezing and thawing temperature, freezing-thawing cycle index and open or closed system. The test results indicate that after freezing-thawing, cohesion decreases, but internal frictional angle increases; the lower freezing temperature is, the less influence of freezing-thawing cycle on cohesion and internal frictional angle is. As freezing-thawing cycle number increases, after 5-7times, the changes of shearing strength properties gradually become stable. Water supply can reinforce the influence of freezing-thawing on C and ; thawing temperature has a slight effect on the shearing strength properties of saturated undisturbed silty clay.

Key words: freezing-thawing cycle, saturated undisturbed silty clay, shearing strength properties, freezing and thawing temperature

CLC Number: 

  • TU411.7
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