M-sand is “crushed aggregates produced from hard granite stone which is cubically shaped with grounded edges, washed and graded with consistency to be used as a substitute of river sand”.
Advantages of M-Sand
1- Greater Durability
M-Sand has balanced physical and chemical properties that can withstand any aggressive environmental and climatic conditions as it has enhanced durability, greater strength and the overall economy. Usage of M-Sand can overcome the defects occurring in concrete such as honeycombing, segregation, voids, capillary etc.
2- High Strength
The superior shape, proper gradation of fines, smooth surface texture and consistency in production parameter of chemically stable sands provides greater durability and higher strength to concrete by overcoming deficiencies like segregation, bleeding, honeycombing, voids and capillary.
3- Greater Workability
The crusher dust is flaky and angular in shape which is troublesome in working. There is no plasticity in the mortar which makes it even difficult for the mason to work, whereas the cubical shape with grounded edge and superior gradation gives good plasticity to mortar providing excellent workability.
4- Offsets Construction Defects
M-Sand has optimum initial and final setting time as well as excellent fineness which will help to overcome the deficiencies of concrete such as segregation, bleeding, honeycombing, voids and capillary.
Usage of M-Sand can drastically reduce the cost since like river sand, it does not contain impurities and wastage is NIL. In International Construction Scenario, no river sand is used at all, only sand is manufactured and used, which gives superior strength and its cubical shape ensures a significant reduction in the cement used in the concrete.
M-Sand is the only alternative to river sand. Dredging of river beds to get river sand will lead to environmental disaster like groundwater depletion, water scarcity, the threat to the safety of bridges, dams etc.
Disadvantages pf M-Sand
1- Crushed sand can be of coarser and angular texture. This can lead to more water and cement requirement to achieve the expected workability.
2- Manufactured sand can contain larger amounts of micro-fine particles than natural sand, This can affect the strength and workability of the concrete.
We are also using M-sand for the current project.