疏水性纳米白炭黑沥青混合料的蠕变参数对动稳定度的敏感性分析  

Sensitivity Analysis of Creep Parameters of Hydrophobic Nano-silica ModifiedAsphalt Mixture to Dynamic Stability

作　　者：戴文亭[1] 郝如意 李颖松 常孟元 郭威 DAI Wenting;HAO Ruyi;LI Yingsong;CHANG Mengyuan;GUO Wei(School of Transportation,Jilin University,Changchun 130000,China)

机构地区：[1]吉林大学交通学院,长春130000

出　　处：《材料导报》2020年第S01期237-240,共4页Materials Reports

基　　金：国家自然科学基金(51178204)。

摘　　要：以基质沥青混合料与改性沥青混合料为研究对象进行动态蠕变试验和车辙试验,深入分析疏水性纳米白炭黑改性沥青混合料的蠕变参数对动稳定度的敏感性。结果表明:硅烷白炭黑可有效提高沥青混合料的动稳定度,且车辙试验结果与建立的关系模型有很好的关联性;分析动态蠕变永久变形参数对动稳定度的敏感性,得出粘滞系数η1和动稳定度DS的变化呈正相关,粘滞系数η1对动稳定度DS的敏感性最高;且加入硅烷白炭黑可有效提高粘滞系数对动稳定度的敏感性。The dynamic creep test and rutting test of matrix asphalt mixture and modified asphalt mixture were carried out,and the sensitivity of creep parameters of hydrophobic nano-silica modified asphalt mixture to dynamic stability was deeply analyzed.The results show that the dynamic stability of the asphalt mixture can be effectively improved by the silane silica,and the rutting test results are well correlated with the established relationship model.The sensitivity of dynamic creep permanent deformation parameters to dynamic stability is analyzed.It is concluded that the viscosity coefficientη1 is positively correlated with the change of dynamic stability(DS),and the viscosity coefficientη1 is the most sensitive to dynamic stability(DS).The sensitivity of viscosity coefficient to dynamic stability can be effectively improved by adding silane silica.

关 键 词：白炭黑 动稳定度 敏感性 动态蠕变试验 车辙试验 

分 类 号：U414[交通运输工程—道路与铁道工程]