Ground Granulated Blast Furnace Slag is a by-product waste generated while producing iron. It is off white in colour
and has similar cementitious properties like cement. Thus use of supplement materials is good for environment as
manufacturing cement liberates a lot of carbon-dioxide. Hence, there is a constant search for supplement material. This
article is all about study of compressive strength of M30 concrete (Design mix) prepared by Ordinary Portland cement
(Dalmia) 53 garde, partially replaced by GGBS in 0%, 10%, 20%, 30% proportions and further comparisons will be
Keywords : GGBS, OPC, Mix-Design, compressive strength.