文献类型：期刊文献

中文题名：沥青表面形貌的表征与测试及其对与集料接触特性的影响

英文题名：Characterization and Testing of Asphalt Surface Topography and Its Influence on Contact Characteristics with Aggregate

作者：甘新立 邹玲 张文利

第一作者：甘新立

机构：[1]贵州理工学院交通工程学院;[2]中交第一公路勘察设计研究院有限公司

第一机构：贵州理工学院交通工程学院

年份：2019

卷号：38

期号：2

起止页码：584-588

中文期刊名：硅酸盐通报

外文期刊名：Bulletin of the Chinese Ceramic Society

收录：CSTPCD;;北大核心:【北大核心2017】；

语种：中文

中文关键词：沥青;表面形貌;原子力显微:镜;接触面积

外文关键词：asphalt;surface topography;atomic force microscope;contact area

摘要：采用原子力显微镜对SK90#基质沥青和SBSⅠ-C改性沥青的表面形貌进行了测试,获得了两种沥青的表面形貌参数,并基于此对沥青的表面形貌特性进行了分析;基于沥青表面的高度概率密度曲线和承载面曲线,从界面实际接触面积的角度分析了沥青表面特性对与集料接触特性的影响。结果表明,SBSⅠ-C改性沥青的表面起伏情况高于SK90#基质沥青,具有更大的表面粗糙度。具有更大S_(sk)(歪斜度)的沥青更有利于形成更好的黏附强度,但也更容易发生磨损而使黏附性能快速降低。沥青与集料间的接触性能受其实际接触面积的影响,SBSⅠ-C改性沥青具有与集料更大的实际接触面积,从而形成更大的摩擦力而具有更优良的黏附性能。
The surface morphology of SK90#matrix asphalt and SBS I-C modified asphalt was tested by atomic force microscopy,and the surface morphology parameters of two kinds of asphalt were obtained.Based on this,the surface morphology characteristics of the asphalt were analyzed.Based on the high probability density curve and the bearing surface curve of the asphalt surface,the actual contact area of the interface was obtained,and the influence of asphalt surface characteristics on contact characteristics with aggregate was analyzed.The results show that the surface undulation of SBS I-C modified asphalt is higher than that of SK90#matrix asphalt,and SBS I-C modified asphalt has greater surface roughness.The larger Ssk is conducive to better adhesion strength between asphalt and aggregate,but it is also easier to wear and reduce the adhesion performance rapidly.The contact performance between the asphalt and the aggregate is influenced by the actual contact area.The SBS I-C modified asphalt has a larger actual contact area with the aggregate,thus forming a greater friction force and having a better adhesion property.