Evaluation of long term compressive strength of concrete made with copper slag and polypropylene fiber

Abstract

In this study the long term compressive strength was evaluated for the concrete made with polypropylene fiber and copper slag. This study aimed to investigate the mechanical property of concrete and to develop regression equations to predict the long term compressive strength of concrete. Copper slag was replaced with fine aggregate by 0.0% (control mix), 20%, 40%, 60%, 80% and 100%. Fibrillated polypropylene fiber of 0.2% to 0.8% volume fraction was added as an admixture. Compressive strength of concrete was estimated at various curing ages of 7, 28, 56, 90 and 180 days. Copper slag 40% and PPF 0.4% gives an optimum value of compressive strength at 28 days. Compressive strength was predicted at these ages using SPSS tool. Compressive strength predicted by 28 days curing period shows good correlation with the experimental values at 56, 90 and 180 days.