水性环氧乳化沥青混合料配合比设计方法研究  

Research on the mix design method of waterborne epoxy emulsified asphalt mixture

作　　者：孔学玉 王春[2] 柳霞 姚宏原 王定德 张庆 KONG Xue-yu;WANG Chun;LIU Xia;YAO Hong-yuan;WANG Ding-de;ZHANG Qing(Gansu Jiuquan Highway Development Center,Jiuquan 735099,China;Highway College of Chang'an University,Xi'an 710064,China)

机构地区：[1]甘肃省酒泉公路事业发展中心,甘肃酒泉7735099 [2]长安大学公路学院,陕西商西安710064

出　　处：《热固性树脂》2024年第4期30-35,共6页Thermosetting Resin

基　　金：甘肃省交通运输厅科技项目(2021-16)。

摘　　要：乳化沥青混合料由于其强度形成机理导致早期强度低、水稳定性差,很难适用于沥青路面面层。本文采用布氏粘度试验、拉拔试验分析了水性环氧掺量对乳化沥青粘结性能的影响,并对考虑乳化沥青混合料水稳定性的配合比设计方法进行了研究。结果表明,水性环氧的掺加能大幅提升乳化沥青的粘结性能,但综合考虑成本与性能因素,推荐水性环氧掺加质量分数为15%。在混合料配合比设计过程中纳入浸水马歇尔稳定度、飞散损失率两个指标可以有效防止水性环氧乳化沥青混合料出现早期水损害问题,使其各项性能均能达到甚至超越热拌改性沥青混合料的技术水平,完全可用于高等级公路沥青路面面层。The emulsified asphalt mixture,due to its strength formation mechanism,has low early strength and poor water stability,making it difficult to apply to asphalt pavement surface layers.The influence of water-based epoxy content on the bonding performance of emulsified asphalt was analyzed using Brinell viscosity test and pull-out test,and the mix design method considering the water stability of emulsified asphalt mixture was studied in this paper.The results showed that the addition of waterborne epoxy could significantly improve the bonding performance of emulsified asphalt,but considering cost and performance factors,the recommended mass fraction for adding waterborne epoxy was 15%.Incorporating two indicators,immersion Marshall stability and flying loss rate into the mix design process of the mixture could ffectively prevent early water damage of water-based epoxy emulsified asphalt mixture,enabling its various performance to reach or even surpass the technical level of hot mix modified asphalt mixture,and could be fully used for high-grade highway asphalt pavement surface.

关 键 词：水性环氧树脂 乳化沥青 水性环氧乳化沥青混合料 配合比设计 马歇尔稳定度 飞散损失率 

分 类 号：TQ323.5[化学工程—合成树脂塑料工业] U416.217[交通运输工程—道路与铁道工程]