The building is decorated, material of ornamental facing stone basically has marble and granite. Marble basically is used at indoor, granite basically is used at outdoor, all be advanced facing material. Make face of indoor exterior trim decorate the effect with marble and granite good, fast, but cost is high, consequently multi-purpose ask at public construction and adornment grade tall project is medium. But in recent years, as standard of living rise, people also is being updated ceaselessly to the aesthetic idea of the surroundings of oneself, marble and granitic increasing also ground appear in living in adornment to decorate.
Main component humanness makes stone material and natural two kinds big, here basically introduces natural marble and natural granite.
Natural marble is the degenerative cliff that the original rock in the lithosphere forms through action of high pressure of the high temperature inside the lithosphere. Material of the adamant in belonging to, basically comprise by calcite, limestone, serpentine and dolomite. Its bases is given priority to with calcium carbonate, occupy 50% above about. Other still manganese of calcium of carbonic acid magnesium, oxidation, oxidation and 2 oxidation silicon wait. Because marble contains impurity commonly, and the effect that calcium carbonate suffers carbon dioxide, carbide, hydrosphere in atmosphere, easy also decency and corrosion, and make the surface loses luster very quickly. So of a few, wait like blueness of white marble, moxa leaf pledge the stabler and fast breed with pure, little foreign matter can be used at outdoor, other breed is unfavorable use at outdoor, use at interior decoration face only commonly.
The facing that natural marble can control advanced adornment project board, the facing of face of the door between bedplate of the indoor metope that is used within the public construction project such as guesthouse, exhibition, cinema, bazaar, library, airport, station, past face, baluster, ground, window, information desk, elevator, it is stuff of good indoor and advanced adornment. Still can use at making marble mural, handicraft, articles for daily use wait in addition.
Natural granite is igneous rock, also call acidity crystallization plutonic rock, be a kind of the widest rock distributings in igneous rock, belong adamant capable person, by feldspathic, quartz and micaceous composition, its composition is given priority to with 2 oxidation silicon, occupy 65% ～ about 75% . Cliff is qualitative hard and close-grained, by its crystallization grain size can be divided for " of " Wei brilliant, " " of thick any crystalline substance is mixed " of " fine brilliant 3 kinds.
Granitic character is mixed on mineral composition definitely structure. The granite with good quality, crystallization grain is fine and even, micaceous content is little and quartz is more, and do not contain pyrite. Granitic not easy decency is degenerative, exterior colour and lustre can maintain hundred years above, facing of the wall outside because this is multi-purpose,be being mixed at wall foundation. As a result of granitic hardness taller, wear-resisting, so commonly used also decorate a project at high structure, for example, the ground of old hall.
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