无砟轨道CA砂浆研究及其施工工艺和工装

研究目的:寻找满足具有流动度好、工作时间长、早期有膨胀、后期收缩小等优点,可以满足高速铁路运行的高平顺性、稳定性和耐久性标准要求的CA砂浆配合比以及施工工艺和工装。研究结果:选定的CA砂浆配合比的各项性能指标符合标准要求,施工工装及工艺操作简单,工作效率高,施工成本低,经统计分析,可节约成本近40%。

Research on CA Mortar for Ballastless Track and Its Construction Techniques and Equipments

Research purposes:The purposes are to seek CA mortar mix ratio and construction techniques and equipments for it,which can satisfy the requirements of high regularity,stability and durability for high-speed railway,with the features of perfect flowing property,long-term efficiency,expansion in early stage and less contraction in end stage. Research results: The all performance indexes of selected CA mortar mix ratio satisfy the standard requirements with the features of easy operation of construction equipments,high working efficiency and lower construction cost,which can reduce the construction cost by about 40%.