Effectiveness of solar heat reflective coatings in reducing asphalt concrete temperature

Release time:2024-08-09  Hits:

• Affiliation of Author(s):材料科学与工程学院
• Journal:Journal of Testing and Evaluation
• Key Words:中文关键字：沥青混凝土；热反射涂层；降温；路用性能，英文关键字：asphalt concrete; heat re旻挀琀椀瘀攀 coating; reduce te
• Abstract:In order to reduce asphalt pavements temperature and mitigate the UHI effect, a solar heat reflective coating (HRC) was introduced and applied to the surface of asphalt pavement. Main purpose of this paper is to evaluate the temperature reduction and UHI effect of HRC on asphalt pavement. On the basis of the principles of heat reflection, the HRC was synthesized. The antiskid performance and water permeability of the concretes covered with and without HRC were monitored and compared. Meanwhile, an accelerated loading test with loaded vehicles was performed for these two asphalt concretes. The influence of the reduction in the surface temperature on the air temperature was simulated. The research results indicate that the HRC features a good waterproof ability, as well as it can obviously reduce the surface temperature of asphalt concrete for its high light-reflection rate. Furthermore, the accelerated loading test also suggests that the HRC improves the rutting resistance of the asphalt concrete when exposed to the same irradiation strength. Friction coefficient had slightly reduction, and hence the skid-resistant granular should be recommended to added in asphalt pavement. Therefore, this HRC on asphalt pavement could be adopted as a countermeasure against the UHI effect.
• Note:陈筝
• Co-author:马登成
• First Author:chenzheng
• Indexed by:Journal paper
• Volume:卷：40
• Issue:期：5
• Page Number:页：740-745
• Translation or Not:no
• Date of Publication:2012-08-01