矿粉对沥青胶浆的性质影响及作用机理  

Acting Mechanism and Performance of Asphalt Mortars by Mineral Filler

作　　者：樊亮[1,2] 魏建明[1] 张玉贞[1] 王林[2] 

机构地区：[1]中国石油大学(华东)化学工程学院,山东青岛266580 [2]山东省交通科学研究所,山东济南250031

出　　处：《建筑材料学报》2014年第6期1096-1101,共6页Journal of Building Materials

基　　金：山东省自然科学基金资助项目(ZR2009FL020);山东省交通科技项目(2008Y017)

摘　　要：利用常规分析方法及流变测试技术,对普通石油沥青胶浆与SBS改性沥青胶浆进行性能评价和机理探讨.试验发现,沥青胶浆的力学强度和黏弹性变化源于其组成之间的相互作用,2种沥青胶浆在黏弹性组成上有差异,并导致不同的应力响应特点;在高温高频状态下,沥青胶浆内部损耗行为随着粉胶比的增加而提高,胶浆体系更容易被破坏;从沥青胶浆的结构稳定性和损耗特性入手,如相位角的变化,可以更好地研究矿粉对沥青胶浆的影响机制;可利用多应力重复蠕变回复试验中的不可回复柔量差,进行沥青胶浆的最大粉胶比判断.Two different asphalt mortars were studied with common evaluation methods and rheological tes- ting approach. Analysis shows that, the changes of intensity and viscoelasticity depend on the composition differences in asphalt mortars, different stress response of common asphalt and modified asphalt is due to different viscoelasticity composition and structure characteristics. The mortar system with high filler-bitu- men ratio is easy to be destroyed at high temperature and high shear frequency conditions. And in the cog- nition of performance mechanism of mortar, its structure and dissipation properties should be considered, especially the micro-physical meaning of phase angle. The maximum filler-bitumen ratio should be deter- mined by non-recoverable compliance difference by multiple stress creep recovery test.

关 键 词：沥青胶浆 性能评价 多应力重复蠕变回复试验 不可回复柔量 

分 类 号：U214[交通运输工程—道路与铁道工程]