1.Natural granite
The granite referred to in architectural decoration engineering refers to a type of decorative stone represented by granite, including various magmatic rocks and metamorphic rocks of granite, mainly composed of quartz and feldspar, and containing a small amount of mica and dark minerals, such as granite, diabase, gabbro, basalt, peridotite, etc. From the appearance characteristics, granite often presents a uniformly granular structure as a whole, which is called granite structure.
Granite has a dense structure, high strength, high density, extremely low water absorption rate, hard texture, wear resistance, and belongs to acidic hard stone. Its chemical composition includes SiO2, Al2O3, CaO, MgO, Fe2O3, etc. The content of SiO2 is often over 60%, making it an acidic stone. Therefore, it has good acid resistance, weathering resistance, durability, and a long service life. Granite contains quartz that undergoes crystal transformation, volume expansion, and cracking at high temperatures, making it non refractory.
2.Natural Marble
The marble referred to in construction and decoration engineering is broadly defined. In addition to marble, it also refers to various carbonate rocks and metamorphic rocks related to it that have decorative functions and can be ground and polished, such as limestone, dolomite, calcareous sandstone, etc. The main component of marble slabs is carbonate minerals.
Natural marble is relatively dense, with high compressive strength, low water absorption rate, and soft texture, belonging to alkaline medium hard stone. It is easy to process and has good light opening properties. It is often made into polished boards with rich color tones and delicate materials, making it highly decorative. Its chemical composition includes CaO, MgO, SiO2, etc., of which the total amount of CaO and MgO accounts for more than 50%, so marble belongs to alkaline stone. Under the long-term action of acid rain formed by sulfides and soda in the atmosphere, marble is prone to corrosion, resulting in a decrease in surface strength, discoloration, powder loss, and loss of luster, which affects its decorative performance.
3.Bluestone board
Blue slate belongs to sedimentary rocks (sandstone), mainly composed of limestone and dolomite. With the different burial conditions of rocks and the mixing of other impurities (such as copper, iron, manganese, nickel and other metal oxides), various colors are formed. The bluestone material is dense, of medium strength, and easy to process. It can be chiseled and cut into thin sheets or strips using simple techniques. Blue stone slabs are ideal building decoration materials; Used for building wall skirts, floor paving, courtyard railings (boards), steps, etc., with a unique style of ancient architecture.
4.Artificial decorative stone
Artificial decorative stone is a type of artificial material that uses infinite or organic cementitious materials as adhesives, natural sand, crushed stone, stone powder, or industrial slag as coarse and fine fillers, and is formed, cured, and surface treated. It generally has the characteristics of light weight, high strength, thin thickness, bright color, diverse colors, good decoration, corrosion resistance, pollution resistance, easy construction, and low price. According to the different materials and manufacturing processes used, artificial decorative stone can be divided into cement type artificial stone, polyester type artificial stone, composite type artificial stone, sintered type artificial stone, and microcrystalline glass artificial stone. Polyester based artificial stone and microcrystalline glass based artificial stone are currently the most widely used varieties.
