EXPERIMENTAL STUDY TO DETERMINE THE FEASIBILITY OF REPLACING NATURAL RIVER SAND BY WASTE FOUNDRY SAND IN CONCRETE PAVERS

The disposal of waste foundry sand (WFS) in landfills not only occupies open lands, but is also an environmental concern. Disposing or reusing WFS in scientific and environment friendly ways is the need of the hour. This paper investigates the suitability of replacing natural river sand (NRS) by WFS in the manufacture of pavers for non-traffic applications as per Indian Standards. In this study, pavers were manufactured by the rubber mould method of casting. The specimens were tested for various physical and mechanical properties by replacing NRS by WFS in percentages of 0, 25, 50, 75 and 100 by weight. The properties of the specimens that were tested are water absorption, compressive strength, flexural strength, tensile splitting strength and abrasion resistance as per IS 15658: 2006. From the experimental results, it was found that NRS can be replaced by WFS up to 50% by weight.