MANUFACTURING METHOD OF CEMENT ZERO CONCRETE USING MIXED SLAG AND FLY ASH AS BINDER

摘要

PURPOSE: A method of manufacturing concrete without using cement is provided to secure a compressive strength into a 20~80 MP range at the room temperature of 5~40 deg C by a mixing ratio of blast furnace slag and fly ash. CONSTITUTION: A method of manufacturing concrete without using cement and using fly ash and blast furnace slag comprises the step of mixing and stirring a binding material, an activation reagent, fine aggregate, heavy aggregate, water, and a water reducing agent as a blending raw material before curing the mixture to make concrete. The binding material is composed with fly ash with a degree of particle size of 2,000~4,000 square centimeters per gram, and blast furnace slag with a degree of particle size of 3,000~5,000 square centimeters per gram in a weight ratio of 90:10~30:70. The activation reagent is composed with 6~12 mole NaOH and sodium silicate in a weight ratio of 0.75:1.25~1.25:0.75.