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Study on Physical and Mechanical Properties of Clay Before and After Single Freeze-Thaw

  • Chong Xu
  • Zhen-dong Cui
Conference paper
Part of the Advances in Science, Technology & Innovation book series (ASTI)

Abstract

Previous research indicates that significant changes in engineering behavior of cohesive soils may occur if the soil undergoes cycles of freezing and thawing. Understanding this behavior would prove useful to engineering practice as soils are subjected to freeze-thaw cycles during construction or placement. This research study focused on the impact of a single freeze-thaw cycle on the characteristics of Shanghai quaternary Silt Soft Clay (SSSC). It was found that the changes in density and specific gravity were small, the water content and porosity ratio increased, the plastic limit stabilizes with liquid limit increasing, and the soil body was soft. The permeability coefficient increased and the permeability increased. The cohesion and internal friction angle of the clay after freezing and thawing slightly increased, the compression coefficient increased, the compression modulus decreased, the compressibility of the soil increased, and the clay had no confinement resistance after freezing and thawing. The compressive strength was only 1/3 to 1/2 of that of the undisturbed soil, and the intensity decay was obvious, and the sensitivity was reduced.

Keywords

Single freeze-thaw Silt soft clay Physical property Mechanical properties 

Notes

Acknowledgements

This work was funded by the Fundamental Research Funds for the Central Universities (2018ZZCX04).

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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.China State Key Laboratory for Geomechanics and Deep Underground Engineering, School of Mechanics and Civil EngineeringChina University of Mining and TechnologyXuzhouPeople’s Republic of China

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