沥青路面光屏蔽预养护剂组分确定与性能分析  

Study on Composition and Performance Analysis of Asphalt Pavement LS Pre-Maintenance Agent

作　　者：田宇翔[1,2] 马骉 田珂[3] 李瑞[1] 仁乾龙珠[4] TIAN Yu-xiang;MA Biao;TIAN Ke;LI Rui;RENQIAN Long-zhu(Key Laboratory of Special Area Highway Engineering of Ministry of Education,Chang’an University,Xi’an 710064,China;Department of Civil and Environmental Engineering,Michigan Technological University,MI 49931,USA;Tianjin Municipal Engineering Design & Research Institute,Tianjin 300051,China;Tibet Tianlu Co.,Ltd.,Lhasa 850000,China)

机构地区：[1]长安大学特殊地区公路工程教育部重点实验室,西安710064 [2]密歇根理工大学土木与环境工程学院,密歇根州49931 [3]天津市市政工程设计研究院,天津300051 [4]西藏天路股份有限公司,拉萨850000

出　　处：《硅酸盐通报》2019年第6期1861-1867,共7页Bulletin of the Chinese Ceramic Society

基　　金：交通运输行业高层次技术人才培养项目(213021160088);国家自然科学基金(51708044);中央高校基本科研业务费专项资助项目(310821161015,300102218408);西藏自治区科技计划项目(XZ201801-GD-04)

摘　　要：青藏高原等地海拔较高、紫外线辐射强烈,沥青路面易出现严重的紫外老化现象,研发应用于沥青路面预养护工程的光屏蔽预养护剂(LS预养护剂),可有效延长沥青路面使用寿命。以沥青老化与再生机理为基础,比选确定LS预养护剂组分类型。基于溶解性、快干性与存储稳定性要求,通过对比试验确定LS预养护剂组分最佳质量配比。采用人工强紫外老化试验观测LS预养护剂经不同时段紫外老化后的质量损失率与材料外观变化,分析其光屏蔽效果。结果表明:LS预养护剂最佳组分质量配比为岩沥青∶还原剂∶渗透剂∶溶剂油=30∶20∶20∶30,光屏蔽剂与分散剂掺量分别为四组分总质量的5%和0.4%,在此配比下制备的LS预养护剂具有优良的抗光老化性能,满足强紫外线辐射地区沥青路面预防性养护要求。Asphalt pavement occurs serious UV aging disease in Qinghai-Tibet plateau high-altitude and strong UV radiation areas, develop light screening preventive maintenance agent (LS Pre-Maintenance agent) can effectively extend the service life of asphalt pavement in this areas. Based on the asphalt aging and regeneration mechanism, the basic components of LS Pre-Maintenance agent were determined. The optimum mass ratio of components was determined based on the solubility, quick-drying and long-term storage abilities. Used artificial UV radiation aging test to analyze the mass loss rate and appearance change of LS Pre-Maintenance agent, evaluated its anti-UV aging performance. The results show that the optimum mass ratio of rock asphalt, reducing agent, penetrant and solvent oil is 30∶ 20∶ 20∶ 30, the light screening agent is 5% and dispersant is 0.4% of four components total mass. Under this proportion, LS Pre-Maintenance agent shows excellent anti-UV aging abilities, which can meet the pre-maintenance requirements for asphalt pavement in strong UV radiation areas.

关 键 词：道路工程 LS预养护剂 组分最佳配比 抗紫外老化性能 

分 类 号：U418[交通运输工程—道路与铁道工程]