What is M Sand? - Properties | Advantages | Disadvantages

What is M Sand?

Full form of M Sand is Manufactured sand also known crushed sand or manufactured fine aggregate. It is a substitute for river sand for construction work. It is manufactured by crushing rocks, quarry stone or larger aggregate pieces into sand size particle in a factory or query. M sand has a cubical and angular shape. It has a size of less than 4.75 mm.

What is M Sand? - Properties | Advantages | Disadvantages

Why Manufactured Sand Is Used?

Extracting river sand from the river is harmful to the environment it reduces the groundwater level and river water gets dried up. water table level gets reduced due to dragging of the sand from the river and the roots of the tree may not be able to get the water in the absence of sand in river water get evaporated due to direct sunlight.
                                                                  It is recommended to use crushed sand. It is an economical and eco-friendly alternative of natural sand. M sand can be used in construction for all item except plaster and waterproofing work and for bedding under the stone. For hardscape work 50% m sand and 50% rivers and should be used for better result.

Properties of M Sand
  1. The shape of M sand is cubicle and Angular and has a rough texture and hence it is better for concrete.
  2. M sand does not contain silt as it is manufactured by crushing aggregate however if screening is not proper sometimes it may contain some dust.
  3. M sand doesn't contain any moisture.
  4. When m sand is used in concrete the setting time of concrete is comparatively faster.
  5. The compressive strength and flexural strength of concrete made from m sand are higher than natural sand.
  6. When M sand is used in concrete the permeability of concrete is very poor as compared to river sand.
  7. M sand is artificially manufactured so there are no oversized materials.
  8. The water absorption of M sand is 2 to 4 %.
  9. The slump of M sand is less as compared to reverse sand.
  10. M sand does not contain any Marine Products.
    What is M Sand? - Properties | Advantages | Disadvantages
  11. The bulk density of M sand is 1.75 gm/cm3.
  12. The specific gravity of M sand is 2.5 to 2.9 and it depends on parent rock.
  13. While using M sand in concrete there is no need to bulkage correction during mix design.
  14. The ability to old surface moisture of M sand is up to 10%.
  15. M sand has less adulteration than the river sand
  16. M sand causes less damage to the environment as compared to natural sand.
  17. M sand has better quality as compared to natural sand because it is manufactured in a controlled environment.
  18. M sand can be produced in the area closer to the construction site. Bringing down the cost of transportation and providing and assurance of consistent supply.
  19. M sand is highly recommended for RCC work brickwork and block works.
  20. M sand is cheaper than river sand. the rate of crushed sand is approximately 1000 per cubic meter.
              Also, read - What Is Fineness Modulus of Sand?

Advantages of M sand 

What is M Sand? - Properties | Advantages | Disadvantages

  1. M sand is well graded in the required proportion for construction.
  2. M sand does not contain an organic and soluble compound that affect cement setting time.
  3. M sand is artificially manufactured so required property can be obtained.
  4. M sand does not contain impurities such as clay, silt thus increases the quality and durability of 
  5. concrete.
  6. M- sand is cheaper than the river sand.
  7. M sand is an economical and eco-friendly material.

Disadvantages of M Sand

  1. The workability of concrete manufactured with M sand is lesser than that manufacture with natural said. But this can be maintained by using water-reducing admixture (Superplastsizer).
  2. The shape of the river sand is rounded and has a smooth surface. Besides the shape of M sand is a cubicle and Angular and has a rough texture due to this cement paste required to fill gaps in concrete prepared using the river sand is less compared to M sand. Thus m sand requires more water and cement requirement to achieve the expected workability leading to increased costs.
  3. The Other disadvantages of M sand are that m sand contains larger amounts of micro-fine particles than natural sand going to its production process. this again can affect the strength and workability of the concrete.

M Sand Manufacturing Process

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Also, read-

  1. Concrete Mix Ratio For Various Grade Of Concrete
  2. What is concrete? Properties and Uses
  3. Water-Cement Ratio and its Significance
  4. Calculation of Quantity of Material For Concrete Mix Ratio

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