乳化剂对改性乳化沥青性能影响及机理研究  

Study on Effect of Emulsifier on Modified Emulsified Asphalt and Its Mechansim

作　　者：肖晶晶[1] 郑南翔[1] 宋哲玉[2] 

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 [2]长安大学理学院,陕西西安710064

出　　处：《郑州大学学报（工学版）》2008年第3期5-9,共5页Journal of Zhengzhou University（Engineering Science）

基　　金：国家"十一五"科技支撑计划资助项目(2006BAJ18B05)

摘　　要：采用3种不同的乳化剂AE、BE、CE,变化其剂量与SBR胶乳共同作用制备改性乳化沥青,并对乳液乳化效果及蒸发残留物性能进行试验研究.结果表明:当AE、BE、CE的剂量分别达到2.0%、1.2%、1.5%时,三者对SK-90均有良好的乳化效果.残留物5℃延度指标表明,三者对沥青材料性能的影响依次为提高、保持、降低.残留物弹性恢复、黏韧性及韧性、60℃动力黏度等指标的检验,对于微表处用原材料的质量控制具有重要意义.研究表明,当乳液其它指标均满足规范要求时,其残留物60℃动力黏度难以达到国外标准"≮800 Pa.s"的要求,建议我国将弹性恢复、黏韧性、韧性、动力黏度等技术要求逐步列入相关规范.We chose three different kinds of asphalt emulsifiers ： AE, BE, CE, kept other test conditions constant, only changed the emulsifiers＇ dosage, prepared modified emulsified asphalt, then researched on the emulsifying effectiveness and the performance of emulsions＇ evaporated residue. The results show that, when the three emulsifiers＇ dosage reached 2.0% , 1.2% , 1.5% respectively, they emulsified and dispersed the asphalt SK -90 very well. The residue＇ s 5 ℃ ductility showed that the three emulsifiers reflected different influence on the asphalt material, in sequence of improving, keeping and decreasing. Testing the residues＇ elastic recovery, toughness and tenacity as well as 60 ℃ dynamic viscosity is meaningful for controlling the raw material quality which is used for micro - surfacing. Research results indicated, when the other properties of modified emulsified asphalt satisfied the specification requirement well, the evaporation residues＇ dynamic viscosity is difficult to reach the international＇ s requirement in some other countries or areas. The related specification should bring the elastic recovery, dynamic viscosity, toughness and tenacity into the regulation requirements step by step.

关 键 词：改性乳化沥青 乳化剂 延度 弹性恢复 黏韧性 动力黏度 

分 类 号：U416.217[交通运输工程—道路与铁道工程]