摘要
降低沥青路面的温度,可以提高路面的抗车辙能力,增加路面使用年限,同时可以缓解城市热岛效应,具有重要意义。通过可以降低沥青混合料热储量原理,采用表面涂抹反光材料、表层掺加隔热材料以及添加浅色石料部分替代矿料方式对沥青路面降温效果进行了研究分析,结果显示:表面涂抹反光材料提高反射率的效果最佳,降温可达到5.6℃;此外。采用添加浅色石料莫来石替换2.36 mm以下集料方式降温可达3.3℃。
Lowing the temperature of asphalt pavement could improve the pavement on resistance - rutting and increase pavement life,in addition it could also alleviate the urban heat - island effect In this paper, according to the principle of lowing heat storage of asphalt mixture,the cooling effect of asphalt pavement was researched and analysed which surface was covered with reflective material,and the surface mixed with insulation material and light - colored stone to replace some mineral aggregate.The results showed that the surface covered with reflective material to improve the reflectivity was the best way which could reduce by 5.6℃; and adding light - colored stone of mullite replacing aggregate below 2.36 mm could reduce by 3.3℃.
出处
《石油沥青》
2012年第1期32-35,共4页
Petroleum Asphalt
关键词
沥青路面
降低储热量
隔热材料
反光材料
莫来石
asphalt pavement
lowing heat storage
insulation material
reflective material
mullite
