Abstract

A study is presented to reveal the rule of temperature descent of large stone asphalt mixtures with different design thickness at different ambient temperature through the laboratory simulation test of large stone asphalt mixtures. The results show that the surface temperature dropped rapidly when the surface of large stone asphalt mixtures was in contact with air, then the cooling rate gradually decreased and the temperature difference between the surface and the middle of large stone asphalt mixtures maintained between 15°C and 40°C until the surface temperature dropped to the rolling end temperature. Ambient temperature and design thickness of large stone asphalt mixtures have great influences on its cooling rate.

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