Since ancient times, limestone has been used by people for construction. At the same time, this sedimentary rock is very different in its softness from granite and other types of stones. Lime crushed stone is made from pieces of whole natural material, which consists mainly of calcium carbonate (calcite).
General information about building materials
Limestone is mined in central Russia almost everywhere, because it is quite widespread, easy to process and has excellent chemical and physical properties. That is why it is used in construction so widely, second only to sand and gravel materials. Limestone gravel can be of different shades. Its color depends on various inclusions and impurities. Most often, this material has a whitish, brown or gray tint. In some regions it is called dolomite rubble. Its bulk density is 2, 2-2, 7. Lime crushed stone is obtained by crushing a natural mineral. It then goes through a special chemical treatment. Among other types of rubble, this onecheap.
Lime crushed stone: application in the national economy
Because this material is a fragile rock, the final product obtained from it also has a low strength. Very often crushed limestone is used for road works. At the same time, do not forget that it is quite easily washed out, which significantly reduces the life of the road surface. That is why they can only be sprinkled on roads with a small traffic load.
Recently, this building material is increasingly used for the production of various blocks of concrete and reinforced concrete products. Often it is also used for landscaping. Since crushed limestone has a low radiation background, many people prefer to combine it with other types of crushed stone and concrete. This mixture of building materials is great for arranging yards and driveways. It is most popular with owners of small plots. Due to its mechanical properties and low cost, it can significantly reduce the cost of finishing work.
This crushed stone can also be used for the manufacture of building lime, soda, calcium carbide, mineral fertilizers, fluxes for steel production. It is used as a filler in various commercial mixtures, in the printing and glass industries. It is used to produce a flux for making Portland cement.
Cost of building materials
The quality of thisbuilding materials are standardized by GOST. Crushed lime grade 400, fraction 40x70 costs 401 rubles/t. If we talk about the 20x40 option, then its cost is 436 rubles / t; and 5x20 - 531 rubles / t (VAT included). Most of the enterprises producing this building material produce grade 600 lime crushed stone. The retail price for different fractions fluctuates very slightly. So, in Moscow (MKAD) crushed stone 40x70, 20x40 costs 850 rubles / cubic meter, and smaller 5x20 - 870 rubles / cubic meter. (VAT included). The quality of this building material must comply with the requirements of GOST8267-93.
