二氧化钛掺量对橡胶沥青排水路面吸收尾气能力的影响研究  

Influence of TiO_2 Content on Air-purifying Performance of Crumb Rubber Modified Asphalt Porous Pavement

作　　者：马春燕[1] 

机构地区：[1]杭州科技职业技术学院,浙江杭州310014

出　　处：《公路工程》2015年第5期165-169,共5页Highway Engineering

基　　金：国家自然科学基金(50578031);校级科研项目(Y201431379)

摘　　要：为了确定橡胶沥青排水路面混合料中二氧化钛的适宜掺量,选择二氧化钛掺量为混合料质量的0.2%、0.3%、0.4%、0.5%,将二氧化钛和水泥一起添加到橡胶沥青混合料中,制备车辙板试件进行室内试验研究,通过自制的汽车尾气及石英玻璃密闭容器来检测二氧化钛对尾气的吸收效果。试验结果表明:随着二氧化钛掺量的增加,吸收尾气能力变强,掺量达到0.5%时,由于气体浓度、光照条件等原因使反应达到了饱和,0.4%掺量与0.5%掺量的二氧化钛吸收效果较为接近,综合考虑建议二氧化钛的掺量选择0.4%。对掺入0.4%二氧化钛的混合料进行水稳定性试验,其水稳定性有所降低,但仍满足规范要求。In order to make sure TiO2 content of crumb rubber modified asphalt（CRMA）porous pavement,it selected 0.2%,0.3%,0.4%,0.5% by weight of asphalt mixture.Both TiO2 and mineral powder are added to CRMA mixture to prepare rutting test samples.Absorbing vehicle exhaust effect were tested by quartz glass aright container.The result shows that with the increase of TiO2 content,absorbing ability is stronger.Taking saturation of gas concentration,light condition into account,absorbing ability of 0.4% content is close to that of 0.5% content.Therefore,it suggested that the 0.4% of TiO2 content is appropriate.The mixture of 0.4% TiO2 are tested through water stability,and water stability decrease slightly but meets the specification requirements.

关 键 词：橡胶沥青 排水路面 二氧化钛 尾气吸收 

分 类 号：U414.1[交通运输工程—道路与铁道工程]