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Asphalt pavement asphalt pavement can continue to store solar heat at a high temperature for a long time , it is prone to flow deformation under external loads , it will affect traffic safety, while accelerating the destruction of the road . Not only that , but also exacerbated the city's \In view of this , to carry out the asphalt pavement cooling measures , to reduce road surface temperature of asphalt pavement , to ease the \This study proposes a change in the road surface characteristics , changing pavement structure cooling technology , and evaluation of its cooling effect . First of all, the photothermal environment for which the asphalt pavement , from the road surface is heated factors departure establish the heat balance equation of the asphalt pavement by a significant level of analysis , the main factors in determining the indoor simulation . Proposed to change the characteristics of the road surface , i.e. by increasing road radiation , the latent heat of evaporation pavement subgrade exchange of heat , in order to reduce the thermal equilibrium temperature of the asphalt road surface , and reduce road thermal reserves . Secondly, according to the theory of radiation and influence factors of asphalt pavement significantly , the development of the laboratory simulating ambient temperature test device , on this basis , developed a laboratory simulation test program and test methods . The simulated scene five typical asphalt mixture and five structural combination , the exothermic absorption law in simulated conditions were analyzed , the results show OGFC - 13 test items on the surface temperature rise of between 0.2-1.5 ° C , the cooling rate of between 0.9-2.4 ° C ; temperature rise of the temperature at the bottom of the range of 0-4.4 ° C , the cooling rate of between 1.7-6.4 ° C . Under the same conditions , the structure 2cm , 5cm , the bitumen composition is higher than the cement composition 2.2-10 ℃ ,1.5-2 .8 ℃. Finally, reflective materials , insulation materials, structural combination , and a comparative analysis of its cooling effect , results show that the surface treatment program , reflective painting paint cooling best , followed by the use of light-colored stone mullite Stone , blending light-colored stone asphalt mixes program , blending ceramic program is better than blending the Moran Stone program ; OGFC pavement structure combination of the heat out , it has a low heat storage , low road radiation features, with the best results .
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