| Autor: |
Ji, Wen Dong, Kang, Yong Shui, An, Xiao Yu, Zhao, Yue |
| Zdroj: |
Advanced Materials Research; October 2014, Vol. 1049 Issue: 1 p426-429, 4p |
| Abstrakt: |
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. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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