CFT施工工艺是在箱型柱内灌入高性能、高强度混凝土,利用混凝土高抗压特性,使良好延展性的钢骨结构得以提高劲度,整体结构受地震时位移量可降低,不易摇晃受损及增加居住的舒适性。本文主要探讨自密实混凝土在添加高炉石粉后,在不影响其高流动化特性、致密性及耐久性时,应用于高层及超高层建筑柱内灌浆的要点。通过实验添加粉煤灰、高炉石粉取代部分水泥(0、25%、45%)及G型减水缓凝剂依重量取代法,拌和制作成自密实混凝土并探讨混凝土拌合物的坍落度及抗压强度,为以后的柱内灌浆工程提供有力的理论基础。 CFT construction technology is to pour high-performance, high-strength concrete into the box column. By utilizing the high compressive properties of concrete, the stiffness of the steel structure with good ductility can be improved. The overall structure can be easily shaken by the displacement when the earthquake occurs Damage and increase the comfort of living. This paper mainly discusses the key points of self-compacting concrete used in high-rise and super high-rise building column grouting after adding blast furnace stone powder without affecting its high flowability, compactness and durability. By adding fly ash, blast furnace stone powder instead of part of the cement (0,25%, 45%) and G-type water reducing retarder by weight replacement method, mixing into self-compacting concrete and to explore the slump of concrete mixture And compressive strength, provide a powerful theoretical basis for the later grouting in the column.