干湿法工艺下改性剂沥青混合料汉堡车辙高温性能研究  

Analysis of Hamburg Rutting High Temperature Performance and Mechanism of Modifier Asphalt Mixture Under Dry and Wet Process

作　　者：王胜[1] 黄卫东[1] 卢文银 WANG Sheng;HUANG Weidong;LU Wenyin(Key Laboratory of Road and Traffic Engineering of Ministry of Education,Tongji Univrsity,Shanghai 201804;Jiangsu Modern Road and Bridge Co.,Ltd.,Nanjing 210000)

机构地区：[1]同济大学交通运输工程学院道路与交通工程教育部重点试验室,上海201804 [2]江苏现代路桥有限责任公司,南京210000

出　　处：《石油沥青》2023年第1期13-20,共8页Petroleum Asphalt

基　　金：国家自然科学基金资助项目(51778481,51978518,51908426);国家建设高水平大学公派研究生项目(202106260114)。

摘　　要：选取了四种改性剂,通过汉堡车辙试验,对干湿法改性沥青混合料性能进行研究,探究了不同改性剂、不同干湿法工艺对沥青混合料汉堡车辙高温性能的影响,对比分析了干湿法改性沥青混合料性能之间的差距;通过红外光谱试验,对改性剂的改性机理进行探索。结果表明:改性剂有效改性成分(本研究中主要为苯乙烯-丁二烯-苯乙烯嵌段共聚物SBS)含量高,其汉堡车辙高温性能指标优异,同时其干法改性沥青混合料性能与其对应的湿法改性沥青混合料性能差距较小。Four modifies were scfctcd to study the performance of wet and dry modified asphaft mixture by using the Hamburg Wheel Tracking(HWT)test.The rffecc of diffeont modViers and diferent wet and dry processes on the high temperature peifoanance of asphaft mixture with hambury whel tracking was investiva-ted,and the diVcance between the performancc of wet and de modified asphaft mixture was also ccmpared and analyzed;Wc modification mechanism of the modViers was explored ttrough infrared spectrum test.The results show that the high ccntent of the effective modifier(mainty SBS,a styrene-butadiene-styrene block copolymer in this study)is associawd with excellent hambura whed tracking perfoanancc,and the dferencc between the performanc of the da modified asphatt mixture and the wet modeled asphatt mixture is smalt.

关 键 词：改性剂 干湿法 汉堡车辙试验 红外光谱试验 沥青混合料 

分 类 号：U414[交通运输工程—道路与铁道工程] U418.68