Experimental Study on Self Compacting Self Curing Concrete by Replacing River Sand by Quarry Dust for M50 Grade Concrete

Concrete is a commonly utilized as a construction material. Since the time that concrete has been acknowledged as an asset for development of building, researchers have been attempting to help its strength and enhance its performance. Current advances in construction industry demand better quality strength of structures. There is a helpful modification in the concrete design from a strength oriented idea to a performance oriented design. Present-days there is a vast prominence on performance aspect of concrete. One such thought has prompted the change of Self Compacting Concrete (SCC). It is reflected as "the most inventive development in concrete construction". SCC is another sort of concrete with huge deformability and segregation resistance.

Construction engineering utilizes extensive quantity of water for the sake of curing. The days are not so far that all the construction trades need to change over to a unconventional curing system, not just to spare water for the biological development of nature additionally to bolster inside and outside construction activities even in remote areas where there is lack of water.

In the present dissertation is aimed at developing high strength Self Compacting self-curing Concrete of M50 Grade with fine aggregate (sand) replaced by Quarry Dust (QD) (0%, 20%, 40% and 60%). A possible attempt made to cure the concrete internally at ambient room temperature at laboratory condition by applying curing compound and addition of mineral admixture like Ground Granulated Blast Furnace Slag (GGBS) & chemical admixture like super plasticizer (SP). In the present investigations for each mix proportions, 96 cubes and 96 cylinders specimens are casted. The specimens are selfcured and water cured for 7, 14, 28 & 56 days. The slump flow, L-box, J-ring and V-funnel test are carried out on the fresh SCC for all proportions and in harden state compressive and split tensile strength values are determined. Investigations have been made to analyze the properties of such SCCs and to investigate the suitability of quarry dust to be used as partial replacement material for fine aggregate in SCC and curing compound (Concure WB) for self-curing of SCC. It was found the mechanical properties gave maximum strength for natural sand replaced by quarry dust up to 40% for both water cure and self-cure as compared to that of Normal SCC with water cure and self-cure.