水泥-乳化沥青交互作用机理及其复合胶凝材料性能研究  

Study on the mechanism and performance investigation of cementemulsified asphalt composite

作　　者：周延翱 ZHOU Yan'ao(China Railway Construction Bridge Engineering Bureau Group Co.,Ltd.,Hunan Changsha 410017 China)

机构地区：[1]中国铁建大桥工程局集团有限公司,湖南长沙410017

出　　处：《山东交通科技》2022年第1期16-18,21,共4页

基　　金：国家自然科学青年基金项目资助,项目编号:51908071。

摘　　要：通过分析水化热法、电阻率法、微观观测法、粒径分布法、zeta电位法等测试结果,详细论述了水泥-乳化沥青复合胶凝材料的胶结硬化机理,揭示水泥在沥青乳液构筑的环境中水化及沥青乳液在水泥的碱性环境中破乳凝结的相互作用机制;分析了水泥-乳化沥青交互作用与其复合胶凝材料使用性能的关系。研究结果显示水泥-乳化沥青复合胶凝材料的胶结硬化是分阶段逐步完成的物理混融过程,复合胶凝材料的最终强度由沥青网络和水泥框架共同构成。This paper detailed the hardening mechanism of cement-emulsified asphalt composite cemental material and disclosed the interaction between the hydration of cement in asphalt emulsion and the demulsification and coagulation of asphalt emulsion in alkaline cement paste by analyzing testing results in terms of heat of hydration,electrical resistivity, morphological structure, particle size distribution and zeta potential, and analyzed the correlation between interaction of cement and emulsified asphalt and engineering performance of composite. The research results indicate that the cementation hardening of the composite of cement-emulsified asphalt is a physical reaction process that is completed by a series of stages, and the final strength formation of the composite is decided by both the network of asphalt phase and the framework of cement phase.

关 键 词：水泥-乳化沥青 水化反应 破乳反应 硬化机理 微观结构 使用性能 

分 类 号：U416[交通运输工程—道路与铁道工程]