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Article Navigation >  Journal of Traffic and Transportation Engineering  > 2008  >  8(5): 54-60
LI Zhen-xia, WANG Xuan-cang, CHEN Yuan-zhao, MAO Yuan. Strength and mechanic property of expansive soil[J]. Journal of Traffic and Transportation Engineering, 2008, 8(5): 54-60.
Citation: LI Zhen-xia, WANG Xuan-cang, CHEN Yuan-zhao, MAO Yuan. Strength and mechanic property of expansive soil[J]. Journal of Traffic and Transportation Engineering, 2008, 8(5): 54-60.
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Strength and mechanic property of expansive soil

  • School of Highway, Chang'an University, Xi'an 710064, Shaanxi, China

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  • Author Bio:

    LI Zhen-xia (1977-), female, docto ral student, +86-29-82334836, li-zhen-xia2005@163.com

    WANG Xuan-cang (1956-), male, professor, PhD, +86-29-82334836, wxc2005@163.com

  • Received Date: 2008-02-11
  • Publish Date: 2008-10-25
    Abstract
  • Strength, over consolidation and compression index of expansive soil were studied by triaxial test and confined compression test, the relationship between swell-shrinking index and shear strength was set up, the influences of structural feature, mineral composition and outside factors on deformation and strength property were analyzed.Study result shows that expansive soil has the property of over consolidation, shear strength increases with the over consolidation, the better the fissures develop, the higher the compressibility is, the weaker the over consolidation is, and the smaller the shear strength index is.The variation extents of shear strength index are put forward, cohesion changes from 19.8 kPa to 25.5 kPa, and internal friction angle changes from 10° to 19° under consolidated-drained compression test; cohesion changes from 23.0 kPa to 35.3 kPa, and internal friction angle changes from 3° to 14° under consolidated-undrained compression test; cohesion changes from 37.0 kPa to 55.0 kPa, and internal friction angle is 0° under unconsolidated-undrained compression test.

     

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