高模量改性沥青及混合料高温性能研究  

Study on High Temperature Performance of High Modulus Modified Asphalt and Mixture

作　　者：刘东海 陈建民 段旭瑞 魏建国[3] LIU Donghai;CHEN Jia nmin;DUAN Xurui;WEI Jianguo(Hunan Chajiang Expressway Construction and Development Co.,Ltd.,Changsha,Hunan 410204,China;Hunan Provincial Communications Planning,Survey&Design Institute Co.,Ltd.,Changsha,Hunan 410200,China;Changsha University of Science&Technology,Changsha,Hunan 410114,China;Guanxi Xinfazhan Communication Group Co.,Ltd.,Nanning,Guanxi 530029,China)

机构地区：[1]湖南省茶江高速公路建设开发有限公司,湖南长沙410204 [2]湖南省交通规划勘察设计院有限公司,湖南长沙410200 [3]长沙理工大学,湖南长沙410114 [4]广西新发展交通集团有限公司,广西南宁530029

出　　处：《公路工程》2024年第3期121-130,137,共11页Highway Engineering

基　　金：湖南省自然科学基金项目(2022JJ30594)。

摘　　要：为探究以天然沥青为主体制备的高模量改性剂对沥青及混合料高温性能的影响,以高模量天然沥青改性剂HDM为研究对象,制备不同掺量高模量改性沥青及混合料,采用动态剪切流变(DSR)试验,通过温度扫描试验和频率扫描试验研究了HDM高模量改性沥青的流变性能;以SBS改性沥青混合料为对照组,采用车辙试验研究了HDM高模量改性沥青混合料的高温稳定性。结果表明:掺加HDM高模量改性剂可显著提高沥青高温性能,以及沥青混合料的抗车辙性能,增强高温稳定性。推荐HDM高模量改性剂最佳掺量为35%。In order to explore the influence of high modulus modifier prepared with natural asphalt on the high temperature performance of asphalt and mixture,this paper takes high modulus natural asphalt modifier HDM as the research object,and prepares high modulus modified asphalt and mixture with different contents.The dynamic shear rheology(DSR)test was used to study the rheological properties of HDM high modulus modified asphalt by temperature scanning test and frequency scanning test.Taking SBS modified asphalt mixture as the control group,the high temperature stability of HDM high modulus modified asphalt mixture was studied by rutting test.The results show that the addition of HDM high modulus modifier can significantly improve the high temperature performance of asphalt,the anti-rutting performance of asphalt mixture and the high temperature stability.This paper recommends that the optimum content of HDM high modulus modifier is 35%.

关 键 词：道路工程 高模量改性 天然沥青 流变性能 高温稳定性 

分 类 号：U414[交通运输工程—道路与铁道工程]