High Volume Fly Ash Concrete Composition and Pump Production Method for Increasing Pump Pressure

摘要

PURPOSE: A high-volume fly ash concrete composition and a manufacturing method thereof are provided to secure the flowability of concrete with the low amount of water-reducing agent. CONSTITUTION: A high-volume fly ash concrete composition for improving the pumping ability contains cement, fly ash, a water-reducing agent, water, and aggregate. 30~80wt% of fly ash including 45~57wt% of SiO_2 and 6~20wt% of Fe_2O_3 is mixed with a binding material. A manufacturing method of the high-volume fly ash concrete composition comprises the following steps: preparing the cement, the water-reducing agent, the water, the aggregate, and the fly ash including 45~57wt% of SiO_2 and 6~20wt% of Fe_2O_3; mixing the fly ash with the binding material, to perform a concrete mixing; and forming the concrete.