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Manufactured Sand, most commonly M-Sand, could be termed as rock crushed to grain size distribution. In order to arrive at the grain size distribution, the coarser stone aggregates are crushed in a special rock crusher and the crushed material is washed to remove fines. The crushed sand is of cubical nature with grounded edges, washed and graded to as a construction material. The size of manufactured sand is less than 4.75 mm.
Manufactured Sand is crushed in high weight programmed machine with controlled crude material feed. Manufactured Sand is ecologically agreeable and has solid restricting force when contrast with typical sand materials.
Manufactured Sand is an alternative to river sand. Due to fast growing construction industry, the demand for sand has increased tremendously, causing deficiency of suitable river sand in most part of the world. Another reason for use of M-Sand is its availability and transportation cost. Since this sand can be crushed from hard granite rocks, it can be readily available at the nearby place, reducing the cost of transportation from far-off river sand bed.
Thus, the cost of construction can be controlled by the use of manufactured sand as an alternative material for construction. The other advantage of using M-Sand is, it can be dust free, the sizes of m-sand can be controlled easily so that it meets the required grading for the given construction.
Manufactured sand, which is obtained by crushing the rock, is emerging as a viable alternative to river sand. This material is in use for quite some time in developed countries. The use of this sand (also called artificial sand, MSand etc.,) is picking up in India in major cities. Use of scientifically produced Manufactured Sand as an alternative to river sand is the need of the hour and will provide a long term solution to Indian Construction Industry.
Manufactured sand is crushed fine aggregate produced from a source material and designed for use in concrete or for other specific products. Only source materials with suitable strength, durability and shape characteristics should be used. Production generally involves crushing, screening and possibly washing. Separation into discrete fractions, recombining and blending may be necessary..
|Properties||River Sand||Manufactured Sand||Advantages of Manufactured. Sand|
|Shape||Spherical particle||Cubical particle||Higher Cohesion and Compressive Strength|
|Gradation||Cannot be controlled||Can be controlled||Reduction in Voids and Higher strength|
|Particle passing 75micron||Up to 3%(IS:383-1970)||Up to 15% (IS:383-1970)||Refer Note below|
|Clay and Organic impurities||Likely to be present (retard the setting & comp. strength)||Absent||Better Concrete Quality|
|Grading zone(IS-383)||Likely to be present||Manufactured to conform to Zone II||Zone II ideal for Concrete|