Crushed stone for a bed of a railway track

Crushed stone granite fractions: 0-5; 5-10; 10-20; 20-40; 40-70; 25-60;

Production of granite crushed stone. The annual made volume of plant of 700 thousand tone in a year.

Granite crushed stone

Granite crushed stone is a crushed stone from solid rock of a granular structure which is the most widespread on Earth. Granitnayaskala represents the magma which stiffened at big depths. Consisting of well created crystals of feldspar, quartz, mica, etc. Also red, pink or gray, put in order from prevalence in it of spar and mica has color. Blocks receive usually by explosion of the monolithic rock, then they are split up in the car, and the received crushed stone is sifted on fractions. It is the last production phase of crushed stone.

Fractions of granite crushed stone

• 0-5 mm (granite elimination) — the smallest fraction of granite crushed stone, in strict understanding - do not belong to crushed stone, and is a by-product at its production. It is applied as decorative material to finishing, and also to an otsypaniye of paths and roads, nurseries and sports grounds; for production of concrete products, in particular with a surface of "the washed concrete";
• 5-10 mm — the smallest fraction from commercially available. It is used in production of concrete and designs from it for optimization of fractional composition of large filler, for example in production of plates of overlapping in the bezopalubochny way;
• 5-20 mm (mix of fractions 5-10 and 10-20) - are in the greatest demand. It is used in production of concrete and designs from it, in base works, when filling mostovykhkonstruktion, a bridge cloth, road and airfield coverings of the bases;
• 20-40 mm — average fraction. It is applied in production of concrete, reinforced concrete designs, in construction of highways and railroads, tram lines, at laying of the base and construction of production buildings;
• 20-70 mm, 40-70 mm — large fraction, are used in production of concrete, massive designs from it and for works with large volume of concrete. It is applied also in road construction within settlements, at construction of production buildings and constructions;
• 70-120 mm, 120-150 mm, 150-300 mm (QUARRYSTONE) — are seldom used. It is applied in the decorative purposes, usually to finishing of fences, reservoirs, pools.

These are standard, most frequent ways of use of data of fractions of granite crushed stone, however for each of them there is a set of options of application.

On technical characteristics granite crushed stone is strong (brand 800-1200) and high-strength (brand 1400 — 1600), frost-resistant (brand 300 — 400), with a low leshchadnost (5-23%) and 1 class of specific effective activity _Aef (less than 370 Bq/kg). Indicators of content of radionuclides, harmful components and impurity are absent or do not exceed norm that is confirmed by the corresponding certificates and the conclusions issued after carrying out researches.

Good properties of granite do it by popular construction material. It is the best filler for high-branded concrete. Granite is also used as a decorative stone. It can be gray, red or pink and have a set of shades, after polishing and polishing has a beautiful smooth surface. Granite generally consists of kristallovpolevy spar, quartz, mica which maintenance influences color and shades of a stone.