modern construction industry offers customers a huge amount of materials that can and speed, and to facilitate and embellish the result of repairs or the construction of new premises.However, natural stone has not yet passed their position.He is still in demand and popular.What's really nothing to talk about our ancestors, who knew about the virtues of natural materials, perhaps much better than us.No wonder they say that granite - Minerals: thanks to him, to the present day came and architectural masterpieces and unique sculptures.
As he was educated
It is through a process of origin of granite bought inherent unique properties.All its varieties are formed by volcanic eruptions: the magma pours out of the earth to flow into the cavity, located very deep under the surface.Huge masses of the temperature decreased gradually, but still under considerable pressure exerted on them layers of land located above.As a result of igneous rocks fully crystallized, forming granite - minerals.
appearance and physical properties of stone
In the language of ancient Greece, its name means "grain", "grain".The relative porosity of the granite is fairly low: even the coarse varieties (most "rough" among all three institutions), it rarely exceeds 6-7 mm.And fine varieties grain diameter is less than two.The size of the "cells" seriously affects the strength and long-term operation of the facilities of the stone - the smaller the diameter, the stronger the granite.
Granite (minerals) in addition to its strength and density is characterized by decorative.It increases when polishing.The most common kind of black, it is also the least valuable.Color options are and rose (up to red) color, and green and yellow.Such rocks are widely used in architecture and construction.
Construction dignity granite
This stone, especially its fine-grained variety, amazingly resistant to the effects of time: even after five hundred years of destruction only beginning to emerge.He resists abrasion very well, poorly compressible and resistant to abrasion.Atmospheric effects also have little effect on the granite.Useful fossil of this type lends itself to a little acid and practically does not absorb water, making it an ideal material for the finishing of embankments, including the coastal marine strip.
Equally important is the fact that this is actually a natural stone can not be exposed to frost (very important in our latitudes!) And very badly soiled.
To finish granite also fits perfectly, because the harmony and metal parts, and wood, and ceramic parts, and with the most modern materials.And when all our fastidiousness is to recognize that natural stone perfectly keeps cool in summer and winter - warm home.
aesthetics of Granite
Apart from the purely utilitarian advantages of this stone has a good appearance.Polishing manifests its unique structure and richness of colors.But many designers are happy to use unsanded and granite structure, which perfectly absorbs light and creates a wildly and unusual interiors.
variety of color shades that can satisfy even the most demanding esthete: among the wealth of tones certainly find what you need it to him.After all, perhaps, of all the tiles and building materials will not find another so attractive as granite - photo completely reflect its beauty.
than "guilty" granite
As expected, this huge "barrel of honey" necessarily have to "fly in the ointment."Among the shortcomings of this natural stone has to be noted the residual radiation inherent in some varieties of granite.So basically it is used for the exterior.Those chunks, which are intended for domestic, must go through rigorous testing, so as not to harm the health of the people later.
In addition, the increased strength of the stone, which has attributed to its undoubted advantages is also its weakness.Extraction of granite is complicated by its hardness and brittleness combined with it.One has to resort to costly tricks to get a large enough piece of stone intact, and then put a lot of work to bring it to mind.Therefore, granite work so expensive.
Development features
For most solid minerals is not so important in what form they will derive from the core, because they are to be further processing (melting, burning, etc.).Therefore, crushing the surrounding rock is not harmful extractive matter, the main thing here - the convenience of removal.It is quite another thing - facing materials, which include granite.For him, basically obtaining a monolithic bloc without cracks and chips, as these defects will not be able to hide any subsequent tricks.Moreover, such restrictions apply during storage and during transportation, which greatly complicates the process.And if it was reported mineral resources (granite among them), it is necessary to carry out a whole range of other measures aimed at preserving the integrity of the extracted.
most common method
There are different ways of extraction of granite, and on which it has been applied, directly affects the quality of the resulting stone.At the moment, we know three ways and, unfortunately, often used the most barbaric - explosive.He is drilling holes for the charge that explodes the rock.Shards of sorts, of the largest blocks are cut.For the majority of miners, this method is attractive for its cheapness.However, the quality of granite while it turns a very low: the blast wave creates a lot of defects in clumps, causing their strength falls.Yes, and large fragments the output is not too much - at least a third of granite crumble and is only suitable for processing into the gravel.
extraction air
This is a more gentle way.Home is similar to the first embodiment: in the right direction the well is drilled, it is placed in the tank, where pressurized air is pumped.This method makes better use of the granite mine, count locations of faults and avoid damage to the unit, including even microscopic cracks.Monoliths obtained much more, and waste - much less.However, from the mining companies require preliminary investment in the equipment, and the method takes longer than the blast.
most modern version
He - the most expensive.It is called "the method of stone-cutters" and requires the purchase of very expensive equipment and training.But and granite (like any other natural stone) at the output - in perfect quality, without any defects (both external and hidden).And the field is being developed by nearly 100%.
Russian deposits
mining granite in Russia, sadly, being mostly artisanal, blasting.This is despite the fact that there are many fields.This natural stone is mined in the Urals, in Primorye, Khabarovsk Territory, Baikal, Sayan.There are deposits in the suburbs.Is engaged in mining are mostly small private companies, whose volumes have been steadily increasing, despite the fact that the main deposits are located in the Urals.They are developed with great difficulty because of the climatic difficulties, which increases the required investment and raises the cost of granite.However, the growing number of people with high income increases the demand for natural stone and stimulates the development of the industrial sector.
