Performance of Portland cement with steel slag

The Portland cement was used as an activator to improve the hydration activity of steel slag.The research indicated that,the Portland cement had a best effect to enhance the activity of steel slag when the admixture amount of steel slag was less than 30%.The steel slag admixed with GGBFS had better activity effect to steel slag than fly ash,even if the quantity of steel slag and GGBFS was 30%,the early age strength of the composite cement was similar to that of ordinary Portland cement,and exceeded it in later age.The steel slag could improve the physical performance of ordinary Portland cement hardened paste.