EFFECT OF CHLORIDE ATTACK ON THE PROPERTIES OF CONCRETE PRODUCED BY REPLACING NATURAL SAND BY WASTE FOUNDRY SAND

Sandeep S M, K B Prakash

Abstract: Cement, sand and aggregate are essential desires for any construction industry. Sand is a major material used for preparation of concrete and performs an essential role in mix design. The world wide consumption of natural sand could be very excessive in concrete, due to rapid infrastructure growth. The developing nation like India also facing shortage of good quality natural sand. Rapid extraction of sand from river bed causing serious issues like losing water preserving soil strata, loss of vegetation on the bank of rivers, disturbs the aquatic life as well as disturbs agriculture due to fact that of lowering the water table within the well. Recently natural sand is becoming an expensive material because of its demand within construction industry due to this condition research began for cheap and easily available alternative material to natural sand. Some alternatives materials have already been utilized as a replacement of natural sand such as fly-ash, quarry dust, siliceous stone powder, filtered sand and copper slag are utilized in concrete as a partial or full replacement of natural sand. The main objective of this experimental investigation is to study the effect of replacement of natural sand by foundry sand in various percentages such as 0%, 10%, 20%, 30%, 40%, 50%, 60%, 70% & 80% on the characteristic properties of concrete when subjected to chloride attack. The strength parameters considered are compressive strength, tensile strength, flexural strength, shear strength and impact strength after chloride attack. Chloride content is also found for each replacement after chloride attack.

Keywords: Concrete, Natural Sand, Foundary Sand, Cement

DOI: https://doi.org/10.15623/ijret.2017.0602002