Effect of Partial Replacement of Cement with Glass Powder and Fly Ash on Compression Strength of Steel Fiber Reinforced Concrete

Cost of Cement in a concrete is highly expensive so there is a need to find its alternative and the material used as an alternative should exhibit the pozzolanic property when mixed in concrete as well as should be sustainable in nature and should be available at low cost as compared to the cement. Glass powder and Fly Ash powder are one of the sustainable materials which are also available at low manufacturing cost and can be used as cement alternative because they exhibit the pozzolanic reaction when mixed in concrete. It is often used as a pozzolan to form hydraulic cement. This Research focuses on the improvement of early compressive strength of the concrete and not on the alkali silicate reaction. The Compressive strength are calculated of the casted cubes as per IS: 516-1969. The mix design used is M25 as per IS: 10262-2009. Proportion of glass powder used is 0%, 10%, 15%, 20% of total cementitious content in concrete and proportions of Fly ash powder in a concrete are 30%, 15%, 10%, 0% of total cementitious content in a concrete. The constant steel fiber proportion of 1% by the weight of cementitious materials was maintained. This proportions are concluded with the help of study conducted from previous literatures. The use of fly ash reduces the early compressive strength whereas the use of GP improves the early compressive strength of concrete.