灰关联方法确定SBS改性沥青宏观性能微观评价指标  

SBS Modified Asphalt Microscopic Evaluation Parameters of Macroscopic Properties by Grey Method

作　　者：康爱红[1] 丁燕[1] 寇长江[1] 江杰[1] 

机构地区：[1]扬州大学建筑科学与工程学院,江苏扬州225127

出　　处：《河南科技大学学报（自然科学版）》2016年第4期56-59,6,共4页Journal of Henan University of Science And Technology:Natural Science

基　　金：国家自然科学基金项目(51108402)

摘　　要：为了确定SBS改性沥青宏观性能的微观评价指标,首先,选取道路石油沥青与改性剂,在不同的改性剂掺量和剪切时间下制备改性沥青;然后,进行宏观性能测试与荧光显微图像采集,提取聚合物微观形态的特征参数。利用灰关联方法确定与SBS改性沥青宏观性能关联度高的微观评价指标。研究结果表明：面积百分率和长短轴之比与改性沥青宏观性能关联程度优于其他指标,且当面积百分率为18.5%～19.5%、长短轴之比为1.78～1.82时,SBS改性沥青的宏观性能最优。In order to determine the SBS modified asphalt microscopic evaluation parameters of macroscopic properties,road asphalt and modifiers were chosen to prepare modified asphalt in different contents of modifiers and shearing time. Macroscopic properties test and fluorescence microscopy image acquisition were conducted at the same time. Then the microscopic morphology parameters of images were extracted. Gray relation method was adopt to determine the microscopic evaluation parameters of SBS modified bitumen. The results indicate that the area percentage and the ratio of major to minor axis have good correlation with macroscopic properties of modified asphalt. Besides,when the area percentage is 18. 5% ~ 19. 5% and the ratio of major to minor axis is 1. 78 ~ 1. 82,macroscopic properties of SBS modified bitumen is the best.

关 键 词：改性沥青 灰关联 宏观性能 微观形态 

分 类 号：TU535[建筑科学—建筑技术科学]