Abstract
The simplified physical model of asphalt mortar and aggregate was established, and the interfacial mechanical theory was used to calculate the thermal stress between asphalt mortar and aggregate. It could be seen from the calculation Equation of thermal stress that the maximum stress of asphalt mortar and aggregate occurs on the interface. The circumferential tensile stress on the interface between asphalt mortar and aggregate when cooling was taken as initial thermal stress calculation model. Considering the relaxation effect of asphalt concrete, the integral method and the discrete method were used to calculate the thermal stress of asphalt concrete, and the thermal stress calculation model was verified by TSRST. The results show that the calculated results agree with the results of TSRST before the breaking point. The maximum deviation rate from −5 ℃ to the temperature of breaking point was 18.18%, and the average deviation rate was 12.93%.
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Ke, W., Lei, Y., Xu, M. (2023). Calculation Method of Asphalt Concrete Thermal Stress Based on Interface Mechanics. In: Casini, M. (eds) Proceedings of the 2nd International Civil Engineering and Architecture Conference. CEAC 2022. Lecture Notes in Civil Engineering, vol 279. Springer, Singapore. https://doi.org/10.1007/978-981-19-4293-8_3
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DOI: https://doi.org/10.1007/978-981-19-4293-8_3
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