Abstract
Aiming at the high and low temperature diseases of asphalt pavement, in order to improve the environmental adaptability of asphalt pavement, the road phase change temperature-regulating composite material (DTC) was selected to prepare phase change asphalt mixture, and the pavement performance of phase change asphalt mixture was studied by indoor temperature rise and drop test, rut test, immersion Marshall test, freeze-thaw splitting test and low temperature bending test. The results show that DTC reduces the rate of rise and drop during the indoor heating process. DTC can effectively absorb heat for 140min at 40°C and can effectively release heat for 80min at -18°C. With the increase of DTC content, the dynamic stability, residual stability and splitting strength ratio of phase change asphalt mixture show a trend of decrease, while the low temperature failure strain shows a trend of first increase and then decrease.
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