Investigation of internal phases of linear SBS modified bitumen at the nanoscale using AFM PF-QNM

作     者：Chengwei Xing Liping Liu Wei Jiang Jinhuan Shan Jingjing Xiao Dongdong Yuan Wangjie Wu Chengwei Xing;Liping Liu;Wei Jiang;Jinhuan Shan;Jingjing Xiao;Dongdong Yuan;Wangjie Wu

作者机构：Key Laboratory of Special Area Highway Engineering of Ministry of EducationChang'an UniversityXi'an 710064China School of HighwayChang'an UniversityXi'an 710064China Key Laboratory of Road and Traffic Engineering of Ministry of EducationTongji UniversityShanghai 201804China School of Civil EngineeringChang'an UniversityXi'an 710064China 

出 版 物：《Journal of Traffic and Transportation Engineering(English Edition)》 (交通运输工程学报（英文版）)

年 卷 期：2023年第10卷第3期

页      面：399-412页

核心收录：

学科分类：1201[管理学-管理科学与工程(可授管理学、工学学位)] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0813[工学-建筑学] 0814[工学-土木工程] 0823[工学-交通运输工程] 

基　　金：This work was supported by the National Natural Science Foundation of China(grant number 52108394,51978521) the Young Talent Fund of University Association for Science and Technology in Shaanxi,China(grant number 20220419) the Key Research and Development Program of Shaanxi,China(grant number 2023-YBGY-491) 

主　　题：Road engineering SBS modified bitumen Internal phase AFM PF-QNM 

摘      要：Currently,few studies explore the internal phases of styrene-butadiene-styrene(SBS)modified bitumen at the nanoscale,though the surface phases of SBS modified bitumen have been deeply understood through a lot of *** present study uses the atomic force microscopy(AFM)peak force quantitative nanomechanical mode(PF-QNM)to investigate the nanomechanical properties of the interior of linear SBS modified bitumen and corresponding mastics at the ***,the suitable experimental methods for the interior of bitumen and mastics are ***,the phase relationship between surfaces and interiors of linear SBS modified bitumen is determined by analyzing nanomechanical *** this basis,in comparison with the internal phases of base bitumen,the effect of modifiers on phases is deeply ***,the internal phases of linear SBS modified bituminous mastics are further *** results reveal that the interior of linear SBS modified bitumen only has two phases,which form in a manner like periphase and paraphase on the *** contrast to base bitumen,linear SBS modified bitumen does not create new phases and change the properties of original phases in the interior,but affects the proportion of A-phase and B-phase and presents the ***,due to the influence of preparation methods,only the bitumen area away from the fillers can be imaged by AFM *** can be found that the addition of mineral fillers also slightly changes the internal phase distribution of linear SBS modified bitumen,while the effect is less than that of fillers on base bitumen.