Essay On Concrete

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INTRODUCTION Concrete is the most widely used man-made construction material. It is primarily obtained by mixing cement with aggregate and water. There are many formulations of concrete, which provide different properties. It can be moulded into any shape and surface can be textured and coloured for aesthetic purposes. Concrete is widely used in construction of foundations, architectural structures, pavements, bridges/overpasses, and motorways/roads, runways, parking structures, dams, pools/reservoirs, and pipes, footings for gates, fences and poles. Aggregates are bonded together by cement and water to get a mixture called concrete. The major constituent of concrete besides the cement is the aggregate. Various types of aggregates that may be used include sand, crushed-stone, gravel, slag, ashes, burned shale, and burned clay. Fine aggregates are used in the casting thin concrete slabs or other structural members and where a smooth surface is required. Coarse aggregates are used for more massive members.…show more content…
Natural sand, one of the constituent of concrete, is expensive because of the high transportation cost from large-scale sources. Depletion of sources create environmental problems and to overcome this problem there is a need for cost-effective and inventive solution materials. Quarry dust is a waste obtained during the extraction process and now a days it gains good review to be used as a good filler instead of fine aggregate and reduces the cost of production of concrete in terms of partial replacement of Natural river sand .Mix design M25 concrete with replacement of 0%, 20%, 25%, 30% and 35% of quarry dust prepared as M1, M2, M3, M4 & M5 respectively, were considered for laboratory analysis for slump test, compaction factor test, compressive strength test, split tensile strength test and flexural strength of hardened concrete using quarry dust was

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