沥青混合料体积参数VMA、VCA与路用性能关系研究  

Research on Relationship Between Volume Parameters VMA,VCA and Pavement Performance of Asphalt Mixture

作　　者：刘卫东 冯建华 覃攀越 LIU Weidong, FENG Jianhua, QIN Panyue(School of Architecture and Transportation Engineering, Guilin University of Electronic Technology, Guilin Guangxi 541004, Chin)

机构地区：[1]桂林电子科技大学建筑与交通工程学院,广西桂林541004

出　　处：《盐城工学院学报（自然科学版）》2018年第2期1-7,共7页Journal of Yancheng Institute of Technology:Natural Science Edition

基　　金：广西壮族自治区大学生创新创业训练项目(201710595222)

摘　　要：为了揭示沥青混合料空间结构与路用性能关系,以VCAratio、VMA为混合料的空间结构指标,通过室内车辙试验、弯曲小梁试验和冻融劈裂试验研究了SMA-13、OGFC-13、AC-13等混合料的空间结构与路用性能关系。研究结果表明:VCAratio可反映混合料的骨架结构,细集料对VMA和骨架结构的形成和稳定性有一定的影响,骨架结构对弯拉强度的贡献率有限,以冻融劈裂试验评价混合料的水稳定性存在一定的局限性。研究结果为沥青混合料的选用和设计提供指导。To reveal the relationship between spatial structure and pavement performance of asphalt mixture,using VCAratio and VMA as the spatial structure index of mixture,the relationship between spatial structure and pavement performance of mixtures such as SMA-13,OGFC-13,AC-13 was studied by indoor rutting test,bending trabeculae test,and freeze-thaw splitting test.The results show that VCAratio can reflect the skeleton structure of the mixture. Fine aggregate has a certain effect on the formation and stability of VMA and skeleton structure. Skeleton structure has limited contribution to bending tensile strength. There are some limitations in evaluating the water stability of mixtures by freeze-thaw splitting test. The research results provide guidance for the selection and design of asphalt mixture.

关 键 词：沥青混合料 VMA VCAratio 车辙 冻融劈裂试验 

分 类 号：U416.2[交通运输工程—道路与铁道工程]