Essay On Concrete

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In the ever increasing construction industry, concrete forms the basic building block. Concrete consists mainly of three raw materials apart from water. These are cement, coarse aggregate and fine aggregate. Out of these raw materials, cement and coarse aggregate can be easily manipulated to match the needs of how concrete should be made. While as sand, which amounts to about 35% by volume of concrete, is mainly obtained from natural sources like river beds and the quality and texture of sand cannot be

controlled. Sand is mainly obtained by mining it from river beds by sand dragging which causes various environmental issues as it disrupts the natural habitat of these rivers. Sand mining is causing depletion of sand from the river beds at an

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