机制砂配制 C55 高性能混凝土耐久性研究

某高铁建设单位要求C50及以上混凝土,必须使用河砂作为细骨料配制梁片混凝土。本文通过分别用机制砂、河砂配制C55连续梁混凝土并检测其耐久性,进而探讨机制砂配制C50及以上混凝土的可行性。

Study on the durability of C55 high performance concrete prepared with sand

A high speed railway construction unit requires C50 and the above concrete,must use the river sand as the fine aggregate to prepare the beam concrete.In this paper,the C55 continuous beam concrete is prepared by using the mechanism sand and river sand separately,and the durability of the concrete is detected,and then the feasibility of preparing C50 and the above concrete is discussed.