From ancient times, limestone was used by people for construction. Moreover, this sedimentary rock is very different in its softness from granite and other types of stones. Crushed stone of lime is made from pieces of whole natural material, which consists mainly of calcium carbonate (calcite).
General information about building materials
Limestone is mined in the middle zone of Russia almost everywhere, since it is quite widespread, easily processed and has excellent chemical and physical properties. That is why it is used in construction so widely, second only to sand and gravel materials. Crushed lime can be of different colors. 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 gravel. Its bulk density is 2.2-2.7. Crushed lime is obtained by crushing a natural mineral. In the future, he undergoes a special chemical treatment. Among other
types of gravel this is the cheapest.
Crushed lime: application in the national economy
Since this material is an unstable rock, the final product obtained from it also has low strength. Very often, crushed stone is used for road works. At the same time, do not forget that it is quite easily eroded, which significantly reduces the life of the road surface. That is why they can only sprinkle 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 limestone crushed stone 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 courtyards and driveways. It has the greatest popularity among 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 product mixes, in the printing and glass industries. It is used to produce flux for the manufacture of Portland cement.
Building Material Cost
The quality of this building material is standardized by GOST. Crushed stone of lime grade 400 fraction 40x70 costs 401 rubles / t. If we talk about the option 20x40, then its cost is 436 rubles / t; and 5x20 - 531 rubles / t (including VAT). Most of the enterprises producing this building material produce 600 grade limestone. The
retail price for various fractions varies very slightly. So, in Moscow (MKAD) crushed stone 40x70, 20x40 costs 850 rubles / cubic meter, and a smaller 5x20 - 870 rubles / cubic meter. (VAT included). The quality of this building material must comply with the requirements of GOST8267-93.