Effect of waste foundry sand and glass fiber on mechanical properties and fire resistance of high-strength concrete

Owning to the ever-raise amount of waste materials of industrial by-products, solid waste management is creating the major worry for the globe. This paper carried out the outcomes of an experimental investigation on mechanical properties and fire resistance of concrete with the application of waste foundry sand and glass fiber. Waste foundry sand is a by-product of ferrous and nonferrous metal casting industries, it utilized as partial replacement of fine aggregate (natural sand) and glass fiber as an addition to the voluminous portion of concrete. In this empirical interrogation waste foundry sand and glass fiber have been utilized in five different mix proportions of concrete MP-1 (0% WFS and 0% GF), MP-2 (40% WFS and 0.5% GF), MP-3 (50% WFS and 0.5% GF), MP-4 (40% WFS and 1% GF), MP-5 (50% WFS and 1% GF) in M 35 grade of concrete. The specimen cast and cured 7, 14, and 28 days and the following tests have conducted (compressive strength, split tensile strength, flexural strength, and fire resistance). Hence, it indicates that the admirable mix proportion is MP-4 (40% WFS and 1% GF). Owning to it increases compressive strength by 12.5%, split tensile strength by 18.57%, and flexural strength by 8.33% at the age of 28 days. Conversely, compressive strength decreases in other mix proportions as compared to control concrete at the age of 28 days. The consequence of the fire resistance test illustrates that MP-4(40% WFS and 1% GF) works elegantly as compare to MP-1 (0% WFS and 0% GF) against the high-temperature of fire. (C) 2019 Elsevier Ltd. All rights reserved.