Manufactured sand is a replacement for natural or river sand for mortar or concrete construction. Manufactured sand is made from hard igneous rock by crushing. The crumpled sand is of cubical shape with grounded ends, graded, washed and used as a building material.
Sand is an important element in production of two most used construction constituents viz. mortar and cement concrete. Conventionally, natural sand, which is formed by natural enduring of rocks over many years, is favored as fine aggregate. Financial improvement powering the development of housing and infrastructure generates enormous demand for building materials like sand.
The illegal mining of sand from river beds is posing a severe threat to the atmosphere such as corrosion of banks and riverbeds stimulating landslides, loss of vegetation on the bank of rivers, depleting underground water tables etc. Therefore, sand withdrawal from beds of rivers is being banned or controlled. Regulating the withdrawal of sand along rivers has resulted in illegal activities to spread into hillside and farmlands, creating issues for public such as landslide, deep ponds, and hanging cliffs.
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This sand mined from fields (popularly known as filter sand), in addition to diminishing the productive top soil, damages the excellence of concrete. Mass-produced sand, which is acquired by crushing rocks, is emerging as a viable alternative to river sand. This material is in use for a fairly long time in developed countries.
The use of this sand (also called artificial sand, M Sand, Robo Sand etc.,) is alternative around the globe in main regions. Use of methodically produced manufactured sand as a substitute to river sand is essential and will provide a long term solution for the problem of lack of natural sand to the global construction industry.
Infrastructure development projects around the global have increased in the last few years. Growing urbanization and increasing middle class population propels the need for houses, roads, offices, malls, shops, and basic infrastructure. These factors in turn affect the construction industry and requirement of sand. Sand is a natural aggregate formed and it is a limited resource. Natural and manufactured sand procedure is through extraction from marine banks, sea transport, and from the sides of the ocean.
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This kind of extraction hampers the environment. Over the top in-stream sand-and-rock mining causes the debasement of waterways. In-stream mining brings down the stream base, which may prompt bank disintegration. The main reason for the growth of the natural and manufactured sand market is increased urbanization and improved lifestyle of middle class people. This is achieved from emerging new cities due to construction of residential houses and other infrastructure.
The demand for efficient and economical methods to construct manufactured sand is increasing as river sand deposits situated near development centers are consumed and environmental rules are constricted. Builders are using manufactured sand in the place of natural sand due to easy availability and as its less expensive as compared to natural sand. Sand, whether mined from sand deposits or natural grit or prepared by compressing rock layer is used in several applications for its physical and mineral abilities