A Review on Utilization of Waste Foundry Sand for Producing Economical and Sustainable Concrete

Abstract

This paper deals with a state of art review on utilization of waste foundry sand in civil engineering practice.
The over exploitation of non-renewable energy materials is becoming a threat and therefore it is necessary to seek the
possibility of recycling them, once their durability is obsolete. Metal foundries uses large amounts of sand as part of the
metal casting process. Foundries satisfyingly reclaim and reuse the sand many times in casting process. When the sand
cannot be reused in the foundry, it is remove from the foundry and is called as “waste foundry sand.” The constant
depletion of sand beds at all major sources of availability is a major concern and thus efforts are taken in order to
replace sand in construction activities.
In this study, effect of waste foundry sand over fine aggregate replacement on the compressive strength and split
tensile strength of concrete with M-20 mix proportion of 1:1.82:2.89:0.5 is investigated at different curing periods (7
days, 14 days and 28days). The percentage of waste foundry sand used for replacement are 10%, 20%, 30%, 40%, 50%
and 60% by weight of fine aggregate. Test shows magnificent results, showing capability of waste foundry sand for being
a component in concrete for imparting strength. Making eco-friendly concrete from recycled materials saves energy and
conserves resources which lead to a safe sustainable and economical environment.