摘要
对水泥混凝土路面薄层修补材料水泥-乳化沥青-环氧乳液复合胶浆(CAE)的收缩性能、抗渗性能和抗化学侵蚀性能进行了研究,并通过FTIR(红外光谱)和SEM对CAE复合胶浆的硬化机理进行了分析。结果表明:相比普通水泥砂浆,CAE干缩率明显降低,抗渗性由普通1.3 MPa发生渗透提高到1.5 MPa,并且CAE抗酸侵蚀质量损失率较水泥乳化沥青砂浆降低了34%,乳化沥青和环氧乳液固化后形成相互交织的互穿网络,很好地改善了CAE复合胶浆材料的孔隙结构,提高了CAE的耐久性。
The shrinkage property,impermeability and chemical resistances of cement-epoxyemulsified asphalt（CAE）are studied which serve as the repair materials of cement concrete pavement.At the same time FTIR and SEM are applied to characterize the micro structure.The results show that compared to ordinary cement mortar dry shrinkage of CAE decreases significantly,and impermeability increases from 1.3 MPa of cement paste to 1.5 MPa,and the acid-fast of CAE mass loss rate is decreased by 34% compared with the cement emulsified asphalt mortar.Moreover,it is found that the bonding system of CAE forms a space structure,which is interwoven by emulsified asphalt,epoxy emulsion of cured resin and cement hydration products,however,it can reduce the pore structure of CAE and enhance the durability of CAE.
出处
《公路》
北大核心
2017年第10期219-224,共6页
Highway
基金
西部交通科技项目
项目编号2013318J09230
关键词
薄层修补
水泥-乳化沥青-环氧乳液
耐久性
微观机理
thin layer repair
cement- emulsified asphalt- epoxy emulsion
durability
microscopicmechanism
