Xiamen Youstar Imp & Exp Co.,Ltd





Home > Exhibition > Content

Technical Requirements for marble

Edit:Xiamen Youstar Imp & Exp Co.,LtdUpDate:Jun 19, 2018

Technical Requirements for marble:
For the different application of natural marble, its industrial technical requirements have different emphases.
The natural marble is deserted material
Building Materials Industry Standard (JC202-92) the main requirements for natural marble blocks are as follows:
The material must have a rectangular parallelepiped shape.
The specification size of the block requires a length greater than or equal to 100cm, the width is greater than or equal to 50cm, and the height is greater than or equal to 70cm.
Appearance quality requirements of the same batch of the hue pattern should be basically consistent, the shortage of the angle, lack of edges, cracks and other appearance quality level should conform to the provisions of the table 4.25.6.
Physical performance requirements (JCT202-2001): bulk density is not less than 2.6g/cm3, water absorption is not greater than 0.5%, drying compression strength is not less than 50MPa, bending strength is not less than 7.0MPa.
Craft Carving Use Requirements of dense marble structure, particle uniformity is not easy to fall off, no cracks, no inclusions, color, pattern, block degree, shape to meet the requirements of the form, general requirements greater than 0.15m3.
such as for outdoor, do not need a fresh rock surface, but the requirements of good weathering resistance, low water absorption rate.
Electrical Insulating Plate Quality Many non-ferrous metals, rare metals, precious metals and non-metallic minerals are related to marble in Genesis. It is also an excellent material for building materials and arts crafts. Marble hardness is not small, belong to medium hardness stone, easy to mining and processing. After the plate is polished, it presents decorative pattern or color texture, which is very beautiful and can be used as interior and exterior decoration material. Mining and processing of waste, can be made into handicrafts or by rolling into the production of Terrazzo, Shishi, such as high-quality aggregates, a small number of highly dense homogeneous for art carving and decoration. Because the marble is basically composed of pure calcium carbonate or magnesium carbonate, and thus is extremely sensitive to the dissolution of acid-polluted air, the urban atmosphere usually exists the carbonic acid separated from carbon dioxide and the sulfur produced from the soot, they constantly contact with marble, so that the marble supplies are affected by different degrees. In any case, marble is still an ideal material in building decoration and sculpture.