纳米TiO_(2)乳化沥青雾封层的净化性能研究  

Study on purification performance of nano-TiO_(2)emulsified asphalt fog seal layer

作　　者：高玉霞[1] 樊亮 董福营 林江涛 GAO Yuxia;FAN Liang;DONG Fuying;LIN Jiangtao(Shandong Jiaotong University,Ji'nan 250357,China;Shandong Academy of Transportation Sciences,Ji'nan 250102,China)

机构地区：[1]山东交通学院,山东济南250357 [2]山东省交通科学研究院,山东济南250102

出　　处：《新型建筑材料》2024年第11期138-141,共4页New Building Materials

基　　金：山东省交通运输厅科技计划项目(2018B21)。

摘　　要：制备了TiO_(2)改性乳化沥青并对其雾封层室内净化效果和工程应用性进行测试。结果表明:在120 min内,喷洒量为0.3、0.4 kg/m^(2)的纳米TiO_(2)乳化沥青雾封层对NO_(2)的降解率均大于60%;对汽车尾气中的CO、NO和碳氢化合物(HC)有明显的降解作用,喷洒量为0.3 kg/m^(2)时降解效率更高,在前30 min内NO的降解率可达92.7%。在工程实例中,与原路面相比,雾封层后的路面空气污染物中颗粒物(PM2.5和PM10)、SO_(2)以及CO等气体浓度基本呈下降趋势,而O3浓度则呈上升趋势,且每天的交通量和气温对降解效率影响较大。In this paper,TiO_(2)modified emulsified asphalt was prepared and its indoor purification effect on the fog seal layer and engineering application were tested.The results showed that the degradation rate of NO_(2)of nano-TiO_(2)emulsified asphalt fog seal layer with spraying amount of 0.3 kg/m^(2)and 0.4 kg/m^(2)could reach more than 60%within 120 min.It has obvious degradation effect on CO,NO and HC in automobile exhaust.When the spraying amount is 0.3 kg/m^(2),the degradation efficiency is higher,and the degradation rate of NO can reach 92.7%in the first 30 min.In the engineering example,compared with the original pavement,the air pollutants in the pavement after the fog sealing layer,such as particulate matter(PM2.5 and PM10),SO_(2)and CO,showed a basic downward trend,while ozone showed an upward trend,and the daily traffic volume and temperature also had a great impact on the degradation efficiency.

关 键 词：纳米TiO_(2) 光催化 雾封层 工程应用 

分 类 号：TU535[建筑科学—建筑技术科学]