基于数字图像分析技术的SBS改性沥青分散均匀性评价  

Evaluation Methods of Dispersed Phase Uniformity in SBS Modified Asphalt Based on Digital Image Analysis Technology

作　　者：康爱红[1] 寇长江[1] 刘轩宇[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：《四川大学学报（工程科学版）》2014年第1期172-176,共5页Journal of Sichuan University (Engineering Science Edition)

基　　金：国家自然科学基金资助项目(51108402)

摘　　要：聚合物改性沥青分散相分布均匀性是影响和评价改性沥青改性效果的重要指标。在苯乙烯-丁二烯-苯乙烯嵌段共聚物(SBS)改性沥青荧光显微图像数字化预处理的基础上,借助专业的图像处理与分析软件提取显微图像中分散相的特征参数,并分别采用Morishita指数法、Poisson比较法、Gini系数法、Christiansen系数法对聚合物改性粒子的分散相均匀性进行评估。通过比较几种评价方法结果的准确性与合理性,给出评价聚合物改性沥青改性粒子分布均匀性的推荐方法:Morishita指数离差值和Christiansen分散系数可以对聚合物改性沥青中聚合物相的分布均匀性进行有效的定量评价。Since the dispersed phase uniformity of polymer modified asphalt plays a great role in the evaluation of modified asphalt com- patibility ,fluorescence microscopic images of styrene-hutadiene-styrene block copolymer （SBS） modified asphalt were preprocessed in digitization. Then characteristic parameters of the dispersed phase in microscopic images were extracted through professional image pro- cessing and analysis software. Morishita index method, Poisson comparison method, Gini coefficient method and Christiansen coefficient method were adopted to estimate the dispersible uniformity of polymer modified particles. The comparison of the accuracy and rationality of several evaluation methods showed that Morishita index deviation and Christiansen coefficient are effective for the quantitative evalua- tion of polymer modified asphalt phase distribution uniformity.

关 键 词：SBS改性沥青 数字图像 预处理 分散相均匀性 评价 

分 类 号：U414[交通运输工程—道路与铁道工程]