Published Paper Details:

Being cheapest in earlier days the natural sand used in concrete without any alternate even though natural sand containing organic impurities, clay and silt content more than permitted level. Due to excessive mining the river basin environment got affected, the demand for fine aggregate increased and the prevailing market unable to meet the need. Nowadays crushed sand also called as manufactured sand being used as an alternate to natural sand partially or fully. Even though manufactured sand used in normal construction activities, it is not used in high rise structures involving special concretes. Hence it is necessary to study the properties of special concrete with various replacement proportions of fine aggregate by manufactured sand. This will safeguard environment river basin and at the same time unwanted accumulation of crusher dust will put into better use than being used as mere filling material. Experiments conducted on M25, M30, M40 grade concrete with fine aggregate replacement proportion 25%, 50%, 75% and 100%. The properties such as workability, water absorption, compressive strength, split tensile strength and flexural strength are determined from cubes, beams and cylinders cast with manufactured sand.