Nano-TiO_2掺量对OGFC-13降解尾气效果及路用性能影响  

Influence of Automobile Exhaust Degradation and Pavement Performance of Nano-TiO_2 Content in OGFC-13

作　　者：徐世法[1] 韩昊岳 许鹰[2] 柴林林[2] 段文志 

机构地区：[1]北京建筑大学土木与交通工程学院北京市城市交通基础设施建设工程技术中心,北京100044 [2]北京建筑大学土木与交通工程学院首都世界城市顺畅交通协同创新中心,北京100044 [3]北京市城市道路养护管理中心,北京100000

出　　处：《北京建筑大学学报》2016年第3期61-64,共4页Journal of Beijing University of Civil Engineering and Architecture

基　　金：国家自然科学基金项目(51078017)

摘　　要：为了评价Nano-TiO_2添加到OGFC-13沥青混合料中对汽车尾气的降解效果及路用性能的影响,配制了Nano-TiO_2掺量分别为30%、50%、70%(矿粉等体积代替比例)的OGFC-13沥青混合料,利用所开发的尾气降解效果模拟评价系统,进行了检测评价.结果表明,在OGFC-13中添加Nano-TiO_2可降解尾气中的NO、HC、CO等有害气体,且降解效果随Nano-TiO_2添加量的增加而提高,而对沥青混合料的路用性能影响较小.相对AC-13而言,OGFC-13对尾气降解效果更明显.综合考虑经济与技术因素,推荐Nano-TiO_2在OGFC-13中的掺量为50%.OGFC-13 asphalt mixtures of different nano-titanium dioxide content （30%, 50%, 70% volume replacement of mineral powder ） were designed for the evaluation of effect of nano-titanium dioxide content on automobile exhaust degradation and the influence of road performance. A system evaluating the degradation effect was developed. The test results showed that NO, HC, CO and other harmful emission could be efficiently degraded by adding nano- titanium dioxide to the asphalt mixture. The automobile exhaust degradation increases with the amount of nano- titanium dioxide added, and nano- titanium dioxide has little influence on pavement performance. OGFC-13 has relatively better degradation effect when compared with AC-13. Finally, nano-titanium dioxide content of 50% replacement of mineral powder is recommended considering the economic and technical factors.

关 键 词：OGFC沥青混合料 Nano-TiO2掺量 汽车尾气 降解效果 路用性能 

分 类 号：U414[交通运输工程—道路与铁道工程] U416.2