铁道科学与工程学报2018，Vol.15Issue(1)：79-86,8.
透水型尾气降解沥青混合料性能评价
Performance evaluation of water permeable type tail gas degradation asphalt mixture
摘要
Abstract
In order to study the influence of water permeability function on tail gas degradation performance of asphalt mixture, Test system for permeable type photocatalytic degradation of exhaust gas was developed. A regression model of degradation performance based on connected void fraction was established, quantitative analysis of the effects of static saturation rate and dynamic permeability on the degradation of tail gas was conducted. The research shows that: under the OGFC-16 grading condition, the degradation effect is best, when the particle size of TiO2is 25 nm, the content is 10%, and taking the wet process. At all the levels of saturation rate out of 100%, the cumulative degradation rate is TAC-16>OGFC-16>AC-16, the cumulative degradation rate decreases with increasing of water saturation; In the dynamic permeability stage, cumulative degradation takes the starts to increase slowly and then rapidly, at last, it tends to be stable, the cumulative degradation rate is TAC-16>OGFC-16>AC-16 inf the whole process, Permeable type macropore gradation is recommended as the tail gas degradation mixture carrier. Based on the degradation effect of the mixture and water stability, it is suggested that the bigger the relative void fraction is, the better, but not more than 18.7%.关键词
尾气降解/透水路面/连通空隙/饱水率/水稳定性Key words
tail gas decomposition/permeable pavement/interconnected pores/saturated water ratio/water stability分类
交通工程引用本文复制引用
李鹏琳,付佳伟,陈玉..透水型尾气降解沥青混合料性能评价[J].铁道科学与工程学报,2018,15(1):79-86,8.基金项目
国家自然科学基金资助项目(51308060) （51308060）
