Plate marble cement decoration formaldehyde The name of the marble is named after the original rich in Dali, Yunnan, China. Natural marble is a crystalline limestone with a hard material and can last for decades or even 100 years under normal conditions. Nowadays, marble is often used to make marble plates and to make decoration materials for buildings. What kind of marble is better? How to identify the quality of marble? Interested friends may wish to study together with Xiaobian! The marble is very beautiful after being polished. It is mainly used for processing into various shapes and plates, as wall surfaces, floors, tables and columns of buildings, and also as a material for monumental buildings such as monuments, towers, and statues. Marble can also be carved into works of art, stationery, lamps, utensils and other practical works of art. Marble is the metamorphic rock formed by the original rock in the crust through the high temperature and high pressure in the earth's crust. The internal force of the crust promotes the process of qualitative change of all kinds of original rocks. Crystal marble is a type of marble and is a better decorative material. It can be seen in many of the current renovations. Today we come to understand the relevant knowledge. Among the furniture around us, some marble furniture appears in life, and some houses use marble to lay the ground. Even on the edge of the city, marble is used to cover the streets. This kind of situation also explains the marble Has good advantages. However, everything has two sides, and marble is no exception. Apart from its various advantages, it has some disadvantages. Following Xiao Bian to see what are the advantages and disadvantages of artificial marble table? Artificial marble dining table to buy points. Marble (English: Marble) originally refers to white limestone with black patterns produced in Dali, Yunnan Province. The profile can form a natural landscape painting of ink and wash. In ancient times, marble with a pattern was often used to make a painting or mosaic. Later, the name marble gradually developed into limestone that was used to make architectural decoration materials in all colors. White marble is generally called white marble, but the white marble used to translate western statues is also called marble. Regarding the name of marble, there is a saying that - in the past, Dali had the best quality of marble, so it got its name. Rain Shower Head with Handheld Shower Faucet Set Complete with High Pressure.Includes one-piece cartridge to simplify installation and maintenance.Our shower system provides free replacement parts in 5 years. Shower Faucet,Shower Handle,Shower Diverter Valve,Delta Shower HESHAN CAIZUN SANITRAYWARE CO.,LTD , https://www.nbcaizunsanitaryware.com
Appearance quality: The appearance of different grades of marble plate is different. Because marble is naturally formed, defects are inevitable. At the same time, the pros and cons of processing equipment and measuring tools are also the causes of sheet defects. Some plates are not full (warped or sag), plates have defects (cracks, blisters, stains, etc.), plate body specifications (such as lack of edges and corners, the body is not correct) and so on.
Pattern tone: The marble plate is colorful, with various colors and patterns, which is exactly the charm of the marble plate. The color tone is basically the same, the color difference is small, and the beautiful pattern is a concrete expression of the fine variety, otherwise it will seriously affect the decorative effect.
Surface gloss: The level of gloss on the marble plate surface will greatly affect the decorative effect. In general, the polished surface of a high-quality marble plate should have a mirror-like gloss and clearly reflect the scenery. However, due to the different chemical compositions of marbles of different qualities, the difference in glossiness will be great even for products of the same grade. Of course, the surface gloss of the board between different grades of the same material will also have some differences. In addition, the strength and water absorption of marble plates are also important indicators for evaluating marble quality.
Experts said that the statement that natural marble has higher radioactivity is actually a misunderstanding and it is caused by poor understanding of its radioactivity. According to reports, radioactivity exists in all substances, including water and air. In the same way, radioactivity is also present in natural marble. The most important thing is whether the purchased marble exceeds the standard and where marble is decorated.
In the "Standard for Control of Radioactive Protection of Natural Marble Products", the specific activities of radioactivity in stone building materials are classified into three categories. Class A: The scope of use is not limited; Class B: not for the living room, interior, can be used for other buildings, exterior finishes; Class C: can be used for all exteriors of buildings. Marble is actually marble. It is made of limestone in sedimentary rocks that is degraded by external factors such as high temperature and high pressure. It is mainly composed of calcite and white cloud particles. Many years of actual test results show that calcite and dolomite generally have low radioactivity. Marbles that are metamorphosed by very low-activity limestone are also very low in radioactivity and can be safely used.
Artificial marble is made of granite gravel as a filler, cement, gypsum and unsaturated polyester resin as the binder, and is formed by stirring, grinding and polishing. Most of such marble contains harmful gases. The level of radioactivity in artificial marble depends on the amount of granite filler and its own radioactivity and the radioactivity of cement gypsum. The harmful substances mainly depend on the amount of volatile substances such as formaldehyde and benzene contained in the binder. Artificial marble needs to be added to cement. A certain amount of ash should be added after the cement is fired. The ash of some inferior coals will have higher radioactivity. At the same time, there will be gypsum in the artificial marble.
Regardless of whether you purchase natural or artificial marble, you must ask the business for a radioactive and harmful gas indicator test report, or ask a professional inspection agency to perform the inspection. 
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Select grade: according to the allowable deviation of the specification size, allowable tolerances of flatness and angle, as well as the appearance quality, surface finish and other indicators, the marble plate is divided into three grades: excellent grade, first grade and qualified grade; grade of marble plate The identification is mainly through the detection of instruments and measuring tools.
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