高铁CRTSⅢ型无砟轨道板高流自密实砼配合比研究

Study on Mix Proportion of High Flow Self Compacting Concrete for CRTSⅢ Ballastless Track Slab of High Speed Railway

文章论述了CRTSⅢ型板式无砟轨道自密实混凝土配合比的试配与选定。不仅根据优选出的材料及外加剂,设计了工作性能、物理性能符合要求系列配合比。还研究了不同矿物掺合料掺入量下自密实砼体积稳定性的影响。同时还进行揭板测试,从而确定最佳配合比。

This paper discusses the trial mix and selection of the self compacting concrete mix proportion for CRTSⅢtype slab ballastless track.According to the selected materials and additives,a series of mix proportions with working performance and physical performance meeting the requirements are designed.The influence of different mineral admixtures on the volume stability of self compacting concrete is also studied.At the same time,the peeling test is also carried out to determine the best mix proportion.