As a result of processing various rocks in order to produce crushed stone, an additional product is obtained - screening. It is formed after sieving crushing residues through special sieves to separate them into fractions. In fact, the screening of rubble is itself a fine fraction of it.
Dropout rate
By its properties, screening is similar to feedstock. Like crushed stone, it is characterized by such indicators as density, shape, strength, content of dust particles and clay. It can be limestone, granite, marble, etc. Color depends on the rock, a by-product of which it is: gray, gray-green, reddish, pink. Screening of crushed stone is divided into fractions: the smallest 1-3 mm, larger up to 10 mm.
Despite the fact that screening is a by-product of the production of crushed stone, it can be considered an independent building material, which is widely used. Now many manufacturers consider it more advantageous for their needs to buy crushed stone screening instead of expensive sand.
Dropout Application
Screening is cheaper material compared to crushed stone, and therefore its use significantly reduces the cost of many construction works. It is used for the production of concrete and reinforced concrete products, the manufacture of various architectural details and paving slabs. This bulk material is necessary for the installation of filtration systems for water purification from harmful impurities, in the manufacture of asphalt mixtures, in the production of decorative wall panels and various finishing materials.
The elimination of crushed granite is indispensable in landscape design for the decoration of flower beds and flower beds, the design of garden and park areas. It is a practically non-waste environmentally friendly material. It is often used to produce decorative garden paths, fancy not only in shape but also in color. Alternating screenings of various colors, masters instead of boring covering of paths and platforms create whole pictures in the garden. If the bulk coating is fenced with a small curb, then this permeable material will not wash away even heavy rain.
In winter, crushed stone screening is widely used for sprinkling slippery sections of the road surface. The structure,
specific gravity and optimal particle size of this material provide an excellent anti-slip effect, in addition, screening is safe for the environment, since it does not contain chemical reagents. It is economically feasible to use, especially if in spring to collect the leftovers for use next winter.
Dropout cost
The cost of this type of product depends on several factors: the remoteness of the place of production from the destination, the type and type of screening, the volume of supply, the cost of transport services, etc. When buying material, you must require a hygienic certificate of quality, confirming that the screening of crushed stone complies with established standards and that especially important, does not contain radionuclides.
The low price, strength and versatility of this by-product of rock processing are the main advantages due to which screening is so popular both in the construction industry and in everyday life.