Brief introduction of granite
Granite consists of high-quality underground rocks. After hundreds of millions of years of natural aging, its shape is extremely stable, and there is no need to worry about deformation due to conventional temperature difference. Granite has undergone rigorous physical tests, and selected granite materials with delicate crystals and hard texture. Because granite is a nonmetallic material, there is no magnetic reaction and no plastic deformation. Granite has high hardness and good precision retention. Because granite often contains radioactive substances, it is necessary to measure its radiation level when using granite, and then confirm its application situation.
The origin of granite
There are many producing areas of granite in China, and the main reserves are concentrated in the southeast. Among them, the best are chrysanthemum green, snowflake green and Yunlimei in Yanshi, Henan, Jinan black in Jinan, Shandong, Linzhou green in Linzhou, Linzhou green in Anyang, Shimian in Sichuan, Douhua green in Shanggao, Zhongshan jade in Zhongshan, Guangdong, Guifei red, orange red, pockmarked white, green black flowers and yellow black flowers in Lingqiu, Shanxi. There are more than 40 kinds of decorative stones, such as Jinan black, which are mainly produced in Taishan, Laoshan, Huashan, Xishan and southern Fujian.
Selection of granite
One view is to observe the surface structure of stones with the naked eye. Generally speaking, the stone with uniform and fine texture is the best stone. The stone decorated with coarse-grained granite and unequal-grained structure has poor appearance, uneven mechanical properties and poor quality.
Second, measure the size and specifications of stone. So as not to affect the splicing or cause the deformation of the spliced patterns, patterns and lines, and affect the decorative effect.
Listen to it three times, that is, listen to the knocking of stones. Generally speaking, the stone with good quality, dense and uniform interior and no microcracks has a crisp and pleasant knocking sound; On the contrary, if there are microcracks or veinlets in the stone, or the contact between particles becomes loose due to weathering, the knocking sound will be rough.
Four tests, that is, using simple test methods to test the quality of stone. Usually, a small drop of ink is dropped on the back of the stone. If the ink is quickly dispersed and leached everywhere, it means that the particles in the stone are loose or have microcracks, and the quality of the stone is not good; On the contrary, it means that the stone is dense and has a good texture.
The above information is all about granite. It is not difficult to find that this kind of granite mineral in nature actually has many characteristics that synthetic stone does not have, such as thick enough density, hard enough texture and natural enough patterns. The origin of granite takes into account many provinces in the north and south, and it will show different attitudes because of different provincial environments and different geographical locations. The granite used in the decoration can be completely tailored according to the size and shape of the site demand.
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