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Sandstone is a sedimentary rock, named for its sand grains, whose main components are Si20 and Al20. Natural sandstone is divided into two types: marine sandstone and mudstone. The grain size of marine sandstone is coarser, its hardness is harder than mudstone, its porosity is larger and its porosity is brittle and hard. The main representative varieties are Australian sandstone and Spanish sandstone, while the mudstone is more delicate and its hardness is slightly softer than that of marine sandstone. In addition, there is also a kind of synthetic sandstone which is made of natural sandstone material and inorganic powder, such as Taolik sandstone and Oboya sandstone.


Sandstone is the most widely used stone material for human beings. The application and superiority of sandstone in architectural decoration. The Louvre, decorated with sandstone hundreds of years ago, the British Palace, the United States Capitol, Harvard University, Notre Dame de Paris and so on are still charming and classic. In recent years, with the development of the new consumption concept of building decoration, which pursues environmental protection, health, gorgeous texture and advocates nature, sandstone, which is both healthy, environmental protection and highly decorative, has become popular among decorative stone materials. It can be widely used in interior and exterior wall decoration, floor, door cover, window cover, furniture, railings, gravestones, courtyard stones and other sculpture works of art.


Although there are many kinds of sandstone in China, they are mainly concentrated in Sichuan, Yunnan and Shandong, which are the three major producing areas of sandstone in China. At the same time, Hebei, Henan, Shanxi, Shaanxi and other areas also have, but the product is not well known and less influential. In the past, sandstone was very laborious in construction because of the backward cutting machine and processing machinery in quarries. In recent years, these conditions have been improved, gradually able to provide customers with the highest level of professional knowledge, in accordance with customer requirements for color products of high quality.


The advantages of sandstone. From the aspect of decoration, sandstone is simple and generous, rough and natural; the pattern changes are peculiar, such as tree rings, wood patterns and landscape paintings in nature; it is very elegant, warm, and noble atmosphere, which can give people a feeling of returning to nature and approaching to the mountains; in addition, it has good compression resistance and wear resistance, and is a good variety of wall, floor decoration and profiles.


As far as environmental protection is concerned, sandstone is a kind of matte material, which does not produce light pollution caused by light reflection and is also a natural anti-skid material. Marble and granite are smooth stone materials. Only through light can they show decorative effect and easily produce light deficiency.


Sandstone has the characteristics of sound absorption, moisture absorption, fire prevention and matte light because of its large internal structure void. The variety of sandstone decoration is ideal for public places such as cinemas, gymnasiums and Hotels with sound absorption requirements.


Sandstone is a kind of zero radioactive stone, which is harmless to human body. Marble and granite have trace radioactivity, and long-term living in them will cause subtle harm to people. China's "Radionuclide Limits for Building Materials" clearly stipulates that the radioactivity of sandstone is not included in the scope of radioactivity testing, which is based on the conclusion of perennial monitoring and a large number of spot checks made when compiling standards. Actually, as a kind of stone material mainly consisting of Si O and A1 O, it is a kind of environment-friendly, green and safe building material.


Many people think that sandstones are hard stones and they don't need maintenance and care. This is not the case. In order to maintain the beautiful appearance, gloss, texture and practicability of sandstone, it is necessary to understand the characteristics of sandstone and take special nursing measures. Every stone has its own weakness, and one of the weaknesses of sandstone is its porosity. This porous structure allows water to permeate easily. Once the sandstone absorbs water, it will cause discoloration and chemical coloration. These spots will become an integral part of sandstone. Therefore, sandstone needs special care.