High-flowing concrete having fluidity and material separation resistance was developed using a new fluidity agent. Adding it to normal concrete of slump 18cm in an agitator truck provided by a ready mixed concrete, high-flowing concrete of slump-flow 60cm could be manufactured in the construction site. Our Flowing concrete was examined for the applicability of the pump injection method for CFT(Concrete filled steel tube) using an actual-sized CFT. And it was applied to the building. It was confirmed that the developed flowing concrete using a new fluidity agent had the applicability of the pump injection method for CFT.
