M-sand 

• The Rajasthan government has decided to promote the use of manufactured sand (M-Sand) as an inexpensive and easy alternative to river sand.
• The state government in its M-Sand policy- 2020 has made it compulsory to use at least 25 % of it in government constructions.
  • The policy, 2020 aims to redress the problem of waste from mines along with generating employment at local level.
• Also the Sand Mining Framework, 2018, prepared by Ministry of Mines, envisages alternative sources of sand in the form of M-Sand from crushed rock fines (crusher dust), etc.

ABOUT M–SAND

• It is produced by crushing rocks, and quarry stones to a stipulated size of 150 microns.
• Properties
  • High concrete strength compared to river sand.
  • The sand particles of M sand are in cubic form making the bond stronger.
  • Zero silt content.
  • Better quality control from being manufactured in a controlled environment.
• Benefits of M- Sand
  • More cost-effective than using natural sand.
  • consistent grain size and shape.
  • it reduces the need for mining natural sand, thus prevents its negative environmental impacts.
  • it does not require washing before use. Hence, reduces the amount of water required for construction projects.
  • Helps maintaining water table.