人工砂高性能混凝土的配合比设计

Mix Proportion Design of Manpower Sand High Performance Concrete

以京沪高速铁路为工程背景,结合混凝土施工中河砂资源紧张的实际情况,进行了人工砂制备高性能混凝土的研究,研究了泥粉含量、用水量、砂率对混凝土性能的影响,采用矿物掺合料技术等高性能混凝土配合比技术,采用人工砂设计制备出了C30、C35高速铁路桩体、承台、墩身用高性能混凝土。对于人工砂在高速铁路工程混凝土中的应用具有指导意义。

Based on the engineering background of Jing-Hu high speed railway and the actual situation of natural sand shortage,artificial sand high performance concrete was prepared.The effects of mud content,water consumption and sand ratio on the properties of concrete were investigated.The mix proportion of C30 and C35 artificial sand high performance concrete were obtained,which provide a reference for the application of artificial sand in railway project concrete.