On market now, part of the natural granite material sales color is after artificial processing, these granite generally use about a year and a half to will show their true face. Jerry, these granite material thickness was cut thin, insufficient strength, so added grid, generally darker granite if a grid, majority is this factor. Man-made granite material is unsaturated polyester resin as binder, match with natural marble or calcite, dolomite, silica sand, inorganic materials such as glass, and the powder materials apply flame retardants, the color and so on, by mixing, casting, vibration compression, extrusion molding curing methods of a kind of man-made granite material is made.
Natural granite in the daily use of the main is divided into two kinds: marble and granite. Generally speaking, anyone with a texture, called the marble, mainly in some spots called granite. This is from the broad terms. For from narrow sense, marble refers to the yunnan Dali produce of granite. In fact, now all over the country to Dali out a few of block-granite.
Both can also distinguish from geological concept. Granite is igneous rock, also call acidity crystallization plutonic rock, is relatively's most widely distributed a rock, by feldspar, quartz and micaceous composition, its composition mainly occupy 65%-75% about 65% ~ 75%, rocky hard and close-grained. So-called igneous rock is underground stone or volcanic gush excessive lava condensation crystallization and into rock. The content of igneous rock of silica in the nature and content, feldspar decided the property of granite material. When the content of 2 more than 65%, belong to acidity cliff, the orthoclase in, plagioclase, quartz basic mineral when forming crystal, show granular structure, call granite.
Marble is the lithosphere crust rocks over the role in the formation of high temperature and high pressure metamorphic rocks. Crustal internal force makes original of all kinds rock produce a qualitative change process. A qualitative change means original petrosal structure, construction and mineral composition change. The new rock that forms through qualitative change type called metamorphic rocks. Marble mainly by the calcite, limegranite, hauling and dolomite composition. Its main ingredients to calcium carbonate is given priority to, about 50% above. Other and magnesium carbonate, cao, oxidation manganese and silica, etc. Marble, because usually contains impurities, and calcium carbonate by carbon dioxide in the atmosphere, carbide and moisture role, also easy weathering and dissolution, and make the surface soon lose luster, marble general characteristic comparison soft, this is relative to the granite speaking. Of course, you don't need to pay this, because the geologic time is marble by billion in our lifetime, is limited, the qualitative change of a kind of change.
Of course, the above marble and granite in the above classification, is a relatively narrow definition. On market now say, generally have texture is metamorphic, so also appellative marble. And show some spot crystallization particles is appellative granite,. In fact, too detailed classification, that is, geologists' for interior decoration, it almost went. Of course, if your granite used in outdoor, due to the environment is more bad, they require a more detailed classification.
Because natural granite material surface is fine holes, so be able to bear or endure corrupt aspects are weak. General in factory in its surface will process. In the interior decoration, television mesa, windowsill mesa, indoor ground suit to use such as marble. And on the threshold, kitchen table, ground outdoor suits to use granite. One hutch ark mesa had better be to use brunet granite.
On market now, part of the natural granite material sales color is after artificial processing, these granite generally use about a year and a half to will show their true face. The most obvious is the big flower on market now, many are colored green and become, not the real big flower green.
Another note on the back of the grid, is there appear this kind of circumstance of two types: 1. granite itself brittle, must add grid, such as Spain cream-colored. 2. Jerry, these granite material thickness was cut thin, insufficient strength, so added grid, generally darker granite if a grid, majority is this factor.
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