Geomechanics and Engineering

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Estimation of shear strength parameters of lime-cement stabilized granular soils from unconfined compressive tests

  • Azadegan, Omid (Department of Civil Engineering, Shahid Bahonar University of Kerman) ;
  • Li, Jie (School of Civil, Environmental and Chemical Engineering, RMIT University) ;
  • Jafari, S. Hadi (Young Researchers Club, Yasuj Branch, Islamic Azad University)
  • Received : 2013.11.13
  • Accepted : 2014.05.14
  • Published : 2014.09.25
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Abstract

Analytical and numerical modeling of soft or problematic soils stabilized with lime and cement require a number of soil parameters which are usually obtained from expensive and time-consuming laboratory experiments. The high shear strength of lime and cement stabilized soils make it extremely difficult to obtain high quality laboratory data in some cases. In this study, an alternative method is proposed, which uses the unconfined compressive strength and estimating functions available in literature to evaluate the shear strength parameters of the treated materials. The estimated properties were applied in finite element model to determine which estimating function is more appropriate for lime and cement treated granular soils. The results show that at the mid-range strength of the stabilized soils, most of applied functions have a good compatibility with laboratory conditions. However, application of some functions at lower or higher strengths would lead to underestimation or overestimation of the unconfined compressive strength.

Keywords

References

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