材料科学与工程学报2017，Vol.35Issue(6)：906-910,956,6.DOI:10.14136/j.cnki.issn 1673-2812.2017.06.010
SBS改性沥青高温流变性能与相态结构的关系
Relationship between High Temperature Rheological Properties and Morphology Structure of SBS Modified Asphalt
摘要
Abstract
To characterize the network degree and to determine morphology parameters of high temperature performance of SBS modified asphalt,linear SBS modified asphalt was firstly prepared with five contents and different shearing time.Then,fluorescent morphology method,multiple stress creep recovery test and frequency scanning test were used to obtain fluorescence digital image,unrecovered creep compliance and frequency sensitivity at 64℃.Results indicate that high temperature rheological performances are improved sharply by increasing SBS contents and extending the shearing time.However,polymer is unable to form network only by extending shearing time when SBS content is lower than 5％.But polymer network can be formed by increasing SBS contents even with short shearing time.Connected region and area ratio are selected to describe the morphology changing of SBS modified asphalt.Relation formulas of rheology indexes and morphology parameters are given by correlation analysis.It may provide support for high temperature performances evaluation directly by morphology method.关键词
SBS改性沥青/相态结构/流变性能/形态学模型Key words
SBS modified asphalt/morphology structure/rheological properties/morphology model分类
交通工程引用本文复制引用
寇长江,肖鹏,康爱红,吴正光,娄可可..SBS改性沥青高温流变性能与相态结构的关系[J].材料科学与工程学报,2017,35(6):906-910,956,6.基金项目
国家自然科学基金资助项目(51578480、51578481) （51578480、51578481）
江苏省研究生创新科研资助项目(KYZZ15_0363) （KYZZ15_0363）
