Simulation on Freeze-Thaw Action in Multi-Cracks in Rock Mass

Wen Dong Ji; Yong Shui Kang; Xiao Yu An; Yue Zhao

doi:10.4028/www.scientific.net/AMR.1049-1050.426

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 1049-1050Simulation on Freeze-Thaw Action in Multi-Cracks...

Simulation on Freeze-Thaw Action in Multi-Cracks in Rock Mass

Abstract:

Freeze-thaw action in fractured rock mass is discussed. Moist rock exposed to subfreezing temperature would suffer from freeze-thaw deterioration, which would pose serious threat to the stability of geotechnical engineering. Some key factors influencing freeze-thaw action in rock mass is analyzed, such as temperature, freezing rate, freeze-thaw cycles and porosity of the rock. Further more, using the theory of physical chemistry, the freezing point and frozen ratio were derived. Finally, the model of frost crack was built by ANSYS and then imported into FLAC3D by converting procedure. The stress field, temperature filed as well as the normal and shear stress on surface of the cracks were demonstrated. The effect of freezing pressure is reflected in the results.

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Periodical:

Advanced Materials Research (Volumes 1049-1050)

Pages:

426-429

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1049-1050.426

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Online since:

October 2014

Authors:

Wen Dong Ji*, Yong Shui Kang, Xiao Yu An, Yue Zhao

Keywords:

Freeze-Thaw Action, Freezing Pressure, Freezing Rate, Phase Transition

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* - Corresponding Author

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