Effect of using selected industrial waste on compressive and flexural strength of concrete

The main idea of the presented work is to examine the effect of adding industrial waste in the form of Gray Cast iron (GCI) and Ductile Cast Iron (DCI) from the casting industry in the concrete mix. GCI and DCI turnings were used as a partial replacement material for the usual fine aggregates to study the effect on compressive strength and flexural strength of the mix. Partial replacement of fine aggregates by increasing percentage (0–30%) of GCI and DCI turnings reveals that increased GCI and DCI turnings proportions result in increased compressive strength and flexural strength of the concrete against the controlled specimen of concrete mix. The mix with 30% sand replacement by GCI and DCI turnings showed 32.5% increase in compressive strength in comparison to the target strength i.e. 38.25 MPa and 63.83% increase in the flexural strength as compared to the controlled specimen i.e. 23.5 MPa on 28^th day.