石墨烯复合橡胶改性沥青SMA混合料性能分析  

Performance Analysis of SMA Asphalt Mixture with Graphene-rubber Modified

作　　者：郑强强 郭瑞[1,2] 黄研 陈婕[1] 袁伟[1] 王炜 刘宇航 ZHENG Qiangqiang;GUO Rui;Huang Yan;CHEN Jie;YUAN Wei;WANG Wei;LIU Yuhang(School of Civil Engineering and Architecture,Shaanxi University of Technology,Hanzhong 723001,China;Institute of Geotechnical and Highway Engineering,Shaanxi University of Technology,Hanzhong 723001,China)

机构地区：[1]陕西理工大学土木工程与建筑学院,汉中723001 [2]陕西理工大学岩土与道路工程研究所,汉中723001

出　　处：《现代交通技术》2023年第2期20-24,共5页Modern Transportation Technology

基　　金：陕西省教育厅科学研究计划项目“低能耗被动式技术的地域性应用——构建陕南绿色新农宅”(18JK0140);汉中市汉台区科技计划项目(2019kx—19);陕西理工大学大学生创新创业训练计划项目(2021127);陕西理工大学大学生创新创业训练计划项目(S202210720109)。

摘　　要：将石墨烯应用于土木工程的材料中,能有效改善材料的性能。结合甘肃省某公路沥青路面工程实例,通过室内模型试验分析石墨烯复合橡胶改性剂对沥青混合料性能的影响。结果表明:相同试验条件下,石墨烯复合橡胶改性剂对沥青混合料的空隙率、沥青饱和度及马歇尔稳定度等指标值影响显著;与SBS改性沥青混合料相比,石墨烯复合橡胶改性沥青混合料中的集料颗粒具有更好的黏附性;石墨烯复合橡胶改性沥青和SBS改性沥青均能有效改善SMA沥青混合料的水稳性能、高温稳定性及低温抗裂性,但石墨烯复合橡胶改性沥青对混合料水稳性能和高温稳定性的改善效果更为显著,而对低温抗裂性的改善效果较弱。研究结果可为石墨烯复合橡胶改性沥青在实际工程中的应用提供参考。It can effectively improve material properties,while the graphene be used in civil engineering materials.Based on an example of a highway asphalt pavement project in Gansu Province,it has analyzed the influence of graphene-rubber modifier on the performance of asphalt mixture through indoor model test.The results show that:under the same test conditions,the graphene-rubber modifier has a significant effect on the void fraction,asphalt saturation and Marshall stability of asphalt mixture.Compared with SBS modified asphalt,the graphene-rubber modified asphalt has better adhesion to aggregate particles in the mixture.They can effectively improve the water stability,high-temperature stability and low-temperature crack resistance of SMA asphalt mixture from the graphene-rubber modified asphalt and SBS modified asphalt,but the graphene-rubber modified asphalt can improve the water stability and high-temperature stability of SMA asphalt mixture more significantly,but the low-temperature crack resistance is less improved.The research results can provide reference for the application of graphene composite rubber modified asphalt in practical engineering.

关 键 词：道路工程 SMA沥青混合料 石墨烯复合橡胶改性沥青 路用性能 

分 类 号：U414[交通运输工程—道路与铁道工程]