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C50混凝土普遍运用于桥梁的上部构造中,本文通过试验采用适宜的材料,用掺高效流化泵送剂配置满足贵阳市金阳新区兴筑大桥施工的大流动性自密实C50预应力泵送混凝土。兴筑大桥桥梁混凝土设计等级为C50,要求三天强度达40MPa,七天强度达45MPa。要求坍落度180±20mm,4小时坍落度损失小于40mm。混凝土内部最高温小于80℃。梁体混凝土总方量14505m3,其中最多的一次浇筑3000m3。
C50 concrete is generally used in the superstructure of the bridge. In this paper, suitable materials are used in experiments, and the high-flow fluidized pumping agent is used to configure the large-flow self-compacting C50 prestressed concrete for pumping to meet the construction of Xingrui Bridge in Jinyang New District of Guiyang. . Xing Bridge Construction Bridge design grade C50, requiring three days strength of 40MPa, seven days strength of 45MPa. Require slump 180 ± 20mm, 4 hours slump loss less than 40mm. The maximum internal temperature of concrete is less than 80 ℃. The total volume of beam concrete 14505m3, of which the most a pouring 3000m3.