基于表面能理论的沥青与矿料黏附性研究  

Research on Adhesion between Asphalt and Aggregate Based on Surface Energy Theory

作　　者：刘亚敏[1] 韩森[1] 李波[1] 

机构地区：[1]长安大学特殊地区公路工程教育部重点实验室,陕西西安710064

出　　处：《建筑材料学报》2010年第6期769-772,共4页Journal of Building Materials

基　　金：国家西部交通建设科技项目(200731822301-8)

摘　　要：依据表面能理论,利用插板法和柱状灯芯技术分别测得2种沥青与2种矿料的表面能参数,然后计算黏附功与表面自由能变化,分析无水和有水情况下沥青自身黏聚力的变化以及沥青-矿料系统黏附与剥落的趋势;以有水、无水情况下自由能比值的绝对值作为黏附性的评价指标,分析不同沥青-矿料系统黏附性的大小.结果表明:SBS改性沥青-角闪片麻岩系统(SBS-J)的黏附性最佳.因此,表面能理论可以很好地解释沥青-矿料系统的黏附过程和剥落过程,值得进一步深入研究.In order to explain the adhesion between asphalt and aggregate, surface energy theory was used to obtain parameters of two kinds of asphalt and aggregate respectively by the Wilhelmy plate method and the column wicking technique. Adhesive work and difference of surface energy will be gained. Cohesion within the asphalt and the adhesive process and flaking process in the presence of water as well as in the absence of water can be explained. The absolute value of the wet adhesive energy divided by the dry adhesive energy is introduced to evaluate the adhesion of different asphalt-aggregate systems. The results indicate that performance of SBS modified asphalt-hornblende gneiss system（SBS-J） is the best. Surface energy theory can explain the adhesive process and flaking process very well.

关 键 词：道路工程 黏附性 表面能 沥青 

分 类 号：U414.3[交通运输工程—道路与铁道工程]