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Li B.,Lanzhou Jiaotong University | Liu J.-X.,Gansu Province Road and Bridge Construction Group Co. | Ma J.-B.,Gansu Province Road and Bridge Construction Group Co. | Dou H.,Lanzhou Jiaotong University
Chang'an Daxue Xuebao (Ziran Kexue Ban)/Journal of Chang'an University (Natural Science Edition)

Taking the asphalt pavement engineering of Tianshui-Dingxi in Gansu province as an example, the temperature of asphalt mixture at different time was measured, the cooling curve of asphalt mixture was obtained, the cooling characteristics of asphalt mixture were recorded. Based on those, the influencing factors on cooling rate of asphalt pavement was analyzed by the grey relation degree. The results show that the temperatures of asphalt mixture are sharply declined in initial time after paving, with the time increasing, the cooling rate of asphalt mixture decreases. The correlation effect order of the external factors on the cooling rate are pavement thickness, wind speed, air temperature, surface temperature and cloud underlying distribution. Source

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