Engineering properties of concrete with partial utilization of used foundry sand

Abstract

Natural river sand whose availability in recent years is limited due to high cost and scarcity Mortar is a widely used as vital material in the construction world At present many researches are being carried out to overcome the stress of demand for river sand by using alternative materials such as crushed granite powder siliceous stone powder manufacturing sand etc Metal casting process generates several kinds of waste; in which foundry sand is the main waste The usage of natural sand results in depletion of environmental resources so it is essential to focus on recycling instead of disposal for sustainable development of foundry industries One such industrial solid waste is Used Foundry Sand UFS On the other hand fine aggregates involved in the concrete are generally river sand which is scarce high cost and excavation of the river sand that promote environmental degradation So there is an urge to find some alternative solution to dispose UFS and to limit the use of river sand In this research work river sand was partially replaced by UFS The percentage replacements were 0 5 10 15 20 and 25 wt respectively This research document discuss the experimental results conducted for the evaluation of fresh concrete properties mechanical properties such as compressive strength splitting tensile strength flexural strength and modulus of elasticity durability properties like ultrasonic pulse velocity rapid chloride permeability water absorption and abrasion resistance and micro structural analysis after partially replacing natural fine aggregate by UFS newline