Ecofriendly Polypropylene Fibre Reinforced Concrete Using Foundry Sand: Experimental Investigation

Abstract

This experimental investigation was carried out to evaluate the mechanical properties of ecofriendly concrete with foundry sand and polypropylene fibres in which fine aggregate was partially replaced with foundry sand by weight. Using Portland Pozzolana Cement (PPC) as the control material, M30 grade of concrete was created.  The research was carried out with the optimum dosage of Polypropylene fibers in concrete of 1.00 Kg/m3. By weight of fine aggregate, the percentages of foundry sand replacement were 0%, 10%, 20%, and 30%. The mechanical properties of the material were investigated, including compressive strength, split tensile strength, and flexural strength. At 7 and 28 days, the compressive strength, split tensile strength, and flexural strength were measured. According to the laboratory findings, waste foundry sand and polypropylene fibers were only partially replaced when polypropylene fibers and foundry sand were added to concrete to increase compressive strength. With a 20% increase in the percentage of waste foundry sand, the split tensile strength increased. The strength parameters increased when waste foundry sand and polypropylene fibers were combined; the highest strength was achieved at 10% replacement for compressive and flexural strengths, and it is comparable to conventional concrete.