Stone powder

Rock powder, which is also known as rock soil or rock flour, is obtained in two industrial ways in the process of cutting stone or naturally and in the conditions of wear of stone layers on top of each other.
In the industrial method, machines and industrial devices follow the process of crushing and pounding and its site, but in natural conditions, this process is the responsibility of the earth layers and is obtained by moving them on top of each other.
In the natural process, the type of rock will cause the formation and production of various minerals, including limestone or calcium carbonate and granite rocks.

The following are the technical specifications of Purd Sang:
• Has an optimum moisture content of 9% and a maximum dry density of 2 g / cc.
• It has a uniformity coefficient of 13.8 and an internal friction angle of 410. For this reason, this rock powder is a suitable material as a filler for reinforced earth structures according to their design.
• In terms of permeability, this material has good drainage with a permeability coefficient of 0.0024 cm per second.
• This material has a California load factor of 44% (CBR) in heavy compressed and wet conditions.
• Rock flour has better frictional properties than sand, so it is a better option for making concrete with higher strength properties.
• This powder has a high compressibility and holds water well (a great feature for making and increasing the final strength of concrete).
Apart from improving the quality of concrete construction, powdered stone can reduce construction costs due to its cheapness.
This material has good adhesion and creates a paste and plastic state, therefore it increases the flexibility in concreting.
There are also a variety of applications for rock powders, some of which are mentioned:

• Final soil stabilization and resistance
• To improve the properties of concrete, including increasing strength, efficiency, preventing surface cracking, water retention and more
• In making slurry for ceramic tiles
• For spraying on gypsum
• Use in Sandlast
• Combining stone flour with cement for exterior decoration of the building
• Used in agriculture to fertilize the land for plant growth
• Used in sculpture and sculpture
• To fasten toilet and bathroom tiles
• Particle size and jointing for road asphalt (pavement)
• Drainage of underground canals and tunnels
• For the production of molten slag as a molten material (production of steel and iron)
• In the production of adhesives and resins
• In the production of paper and cardboard
• Food and pharmaceutical industries
• Livestock and poultry breeding
• Burial of infectious waste
• Domestic and municipal water and wastewater treatment