What's New :

‘Manufactured sand (M-sand)’

  • Category
    Science & Technology
  • Published
    2nd Feb, 2021

The Rajasthan government brought the much-awaited policy on manufactured sand (M-sand), giving industry status to the units producing it for construction work and reducing the dependence on bajri (riverbed sand).

Context

The Rajasthan government brought the much-awaited policy on manufactured sand (M-sand), giving industry status to the units producing it for construction work and reducing the dependence on bajri (riverbed sand).

About

  • What is manufactured sand (M-sand)?
  • Manufactured sand (M-Sand) is a substitute of river sand for concrete construction.
  • Produced from: Manufactured sand is produced from hard granite stone by crushing. The crushed sand is of cubical shape with grounded edges, washed and graded to as a construction material.
  • Size: The size of manufactured sand (M-Sand) is less than 4.75mm.

Usage of manufactured sand:

  • To meet high demands: Manufactured sand is an alternative for 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 word.
  • Depletion of good quality river sand: Due to the depletion of good quality river sand for the use of construction, the use of manufactured sand has been increased. The Supreme Court had banned illegal mining on riverbeds in 2017.
  • To cut transportation cost: Another reason for use of M-Sand is its availability and transportation cost.
  • To cut construction cost: Thus, the cost of construction can be controlled by the use of manufactured sand as an alternative material for construction.
  • Easily available: Since manufactured 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.
  • Easy modification: 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.
  • Eco-Friendly: Usage of manufactured sand prevents dredging of river beds to get river sand which may lead to environmental disaster like ground water depletion, water scarcity, threat to the safety of bridges, dams etc. to make M-Sands more eco-friendly than river sand.
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