HIGH STRENGTH CEMENT ADMIXTURE COMPOSITION

摘要

PURPOSE: A concrete admixture composition having high strength in atmospheric steam curing is provided, which reduces manufacturing cost and protects environment by using waste, paper ash. CONSTITUTION: The high strength cement admixture composition comprises 1-50 micrometer particle size, 70-90wt.% of II-type anhydrous gypsum(CaSO4), 5-20wt.% of amorphous paper ash eliminated non-reactive silica as a pozzolan material and 1-10wt.% of clinker composed of 3CaO.3Al2O3.CaSO4. The composition of paper ash is 30-40% of SiO2 and 30-40% of CaO, and specific surface area is 3000-5000cm¬2/g.