REVIEW AND SUGGESTIONS ON USE OF STEEL SLAG IN CONCRETE AND ITS POTENTIAL USE AS CEMENTITIOUS COMPONENT COMBINED WITH GGBS

This paper explores the current uses of SS (steel slag) in concrete and its possible use as cementitious material. Due to its huge production and hazardous effects due to dumping of slag there is a need to study its effect on concrete with higher replacement ratios. New methods need to be developed so that comparable 28 days strength could be achieved. Previous researchers have reported the loss of strength by high replacement of BOS (Basic Oxygen Furnace) steel slag alone as replacement of OPC but its use along with GGBS have shown very encouraging results in the studies conducted internationally. The compressive strength, the changes in mineralogy due to hydration, the setting times and the volume stability are discussed based on the available literature. There is a need to study the effect of these ternary mixes to know the optimum level of replacements.