Abstract
Asphalt pavements subject to solar radiation and air temperature can reach high temperatures causing not only environmental problems such as the heat island effect on cities but also structural damage due to rutting or hardening as a result of thermal cycles. This paper established a finite element model to analyze the temperature distribution in asphalt pavement due to thermal environmental conditions. By considering the continuous solar radiation, air temperature and wind velocity, pavement temperature was calculated in the heat transfer module in Comsol Multiphysics. It is found that the amplitude of the pavement temperature is mainly dependent on air temperature and solar radiation. Another 3-D model was established to test the high temperature distribution of asphalt pavement in Nanjing, China. Then the simulation result was compared to SHRP and LTPP prediction, and pavement temperature could agree well with SHRP model in certain depth. The model could predict the maximum, minimum, and amplitude of the pavement temperature with good accuracy, which could provide guide for asphalt pavement design and to develop cool pavements.
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Acknowledgement
This study was supported by the project titled “Effectiveness and Applicability of Asphalt Pavement Maintenance Techniques in Zhejiang” (Project no. 8521002166) founded by Zhejiang Transportation Engineering Construction Group Co., a research project titled “Data mining of Highway Pavement Performance and Evaluation of Maintenance Treatment Effectiveness” (Project no. 3221007409) founded by Southeast University, the Thirteen fifth research project, Part IV: Highway asphalt pavement structure long term preservation (7621000132), funded by Jiangsu Department of Transportation; and the Thirteen fifth research project, Part V: Highway asphalt pavement intelligent maintenance (7621000133), funded by Jiangsu Department of Transportation.
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Gu, X., Liang, X., Dong, Q. (2018). Numerical Simulation of Long Term Pavement Temperature Field. In: Shi, X., Liu, Z., Liu, J. (eds) Proceedings of GeoShanghai 2018 International Conference: Transportation Geotechnics and Pavement Engineering. GSIC 2018. Springer, Singapore. https://doi.org/10.1007/978-981-13-0011-0_43
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DOI: https://doi.org/10.1007/978-981-13-0011-0_43
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