干法胶囊无车辙改性沥青混合料的路用性能研究  

Study on Road Performance of Direct-to-plant Capsule No-rutting Modified Asphalt Mixture

作　　者：彭晔丹 张辉 李娣 PENG Yedan;ZHANG Hui;LI Di(JSTI Group Co.,Ltd.,Nanjing 210019,China;Jiangsu Zhonglu Engineering Technology Research Institute Co.,Ltd.,Nanjing 211899,China)

机构地区：[1]苏交科集团股份有限公司,南京210019 [2]江苏中路工程技术研究院有限公司,南京211899

出　　处：《现代交通技术》2025年第1期1-4,17,共5页Modern Transportation Technology

摘　　要：车辙问题广泛存在于混凝土桥面沥青铺装中。在干法SBS(苯乙烯-丁二烯-苯乙烯嵌段共聚物)改性技术基础上,接枝高分子环氧树脂组分制备干法改性胶囊,并将其掺入沥青混合料中。对其进行马歇尔试验、高低温性能试验、水稳定性试验和动态模量试验,优化设计一种干法胶囊无车辙改性沥青SMA-13混合料,并与常规SBS改性沥青混合料和掺加0.4%抗车辙剂的沥青混合料进行对比。结果表明:干法胶囊无车辙改性沥青混合料的路用性能提升,60℃动稳定度达到37 281次/mm, 70℃动稳定度达到15 022次/mm,其在高温下的模量优于常规改性沥青混合料,同时具有优异的低温性能、水稳定性和抗疲劳性能。Rutting is a prevalent issue in asphalt pavement on concrete bridge decks.By incorporating direct-to-plant modified capsules grafted with high molecular weight epoxy components based on direct-to-plant SBS(styrene butadiene styrene block copolymer)technology to asphalt mixtures,Marshall tests,high-temperature performance tests,low-temperature performance tests,water stability tests,and dynamic modulus tests are conducted to optimize the design of a direct-to-plant capsule no-rutting modified asphalt SMA 13 mixture,which is compared with the conventional SBS modified asphalt mixture and the asphalt mixture of adding 0.4%anti rutting agent.The results show that the road performance of direct-to-plant capsule no-rutting modified asphalt mixture is effectively improved,with a dynamic stability of 37281 times/mm at 60℃and 15022 times/mm at 70℃,its modulus at high temperature is better than that of conventional modified asphalt mixture,and the low-temperature performance,water stability and fatigue resistance are superior.

关 键 词：公路工程 沥青混合料 高温性能 低温性能 抗疲劳性能 水稳定性 

分 类 号：U416.217[交通运输工程—道路与铁道工程]