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A platform for research: civil engineering, architecture and urbanism
Temperature Field of Asphalt Pavement in Seasonal Frozen Region Suffered by Freeze-Thaw Cycles
Numerical analysis model of asphalt pavement temperature field in seasonally frozen regions was established, and boundary conditions and the typical material thermodynamics parameters of the temperature field were determined. Varying pattern and influencing factors of asphalt pavement temperature field in typical seasonally frozen regions were analyzed using the numerical model established before. The analysis results show that the temperature of the surface layer varied significantly, and along the pavement thickness direction the structure layer in deeper position was less affected by the external environment. During one year, the temperature of the surface layer increased with the thickness of the structure layer in high temperature period, but decreased in low temperature period. In contrast, the temperature variation of base and structure below had opposite results from the surface layer. With the thickness of structure layer increased, the variation amplitude of yearly temperature of the base and the structure below gradually decreased, and the highest temperature value of the bottom of base significantly decreased. Meanwhile, the temperature of pavement surface increased with increasing thickness of surface layer in high temperature period, but decreased in low temperature period. Furthermore, the temperature variation of the bottom of surface layer had an opposite varying pattern.
Temperature Field of Asphalt Pavement in Seasonal Frozen Region Suffered by Freeze-Thaw Cycles
Numerical analysis model of asphalt pavement temperature field in seasonally frozen regions was established, and boundary conditions and the typical material thermodynamics parameters of the temperature field were determined. Varying pattern and influencing factors of asphalt pavement temperature field in typical seasonally frozen regions were analyzed using the numerical model established before. The analysis results show that the temperature of the surface layer varied significantly, and along the pavement thickness direction the structure layer in deeper position was less affected by the external environment. During one year, the temperature of the surface layer increased with the thickness of the structure layer in high temperature period, but decreased in low temperature period. In contrast, the temperature variation of base and structure below had opposite results from the surface layer. With the thickness of structure layer increased, the variation amplitude of yearly temperature of the base and the structure below gradually decreased, and the highest temperature value of the bottom of base significantly decreased. Meanwhile, the temperature of pavement surface increased with increasing thickness of surface layer in high temperature period, but decreased in low temperature period. Furthermore, the temperature variation of the bottom of surface layer had an opposite varying pattern.
Temperature Field of Asphalt Pavement in Seasonal Frozen Region Suffered by Freeze-Thaw Cycles
Li, Zhaosheng (author) / Tan, Yiqiu (author)
Fourth International Conference on Transportation Engineering ; 2013 ; Chengdu, China
ICTE 2013 ; 2122-2128
2013-10-09
Conference paper
Electronic Resource
English
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