What are the defects of natural marble?
Natural marble is prone to rupture Natural marble has a variety of beautiful texture, but it is inherently fine cracks, will be used after a long time in the rupture. Crack is difficult to wipe in the daily cleaning, it is inevitable that some of the residue with the wipe of the wipes permanently filled into the cracks, a breeding ground for bacteria. Can not ignore the radiation of natural stone more or less will have a certain degree of radiation, may be harmful to human health.
Marble is the crust in the original rock through the crust in the formation of high temperature and high pressure metamorphic rocks. The internal forces of the crust have led to changes in the quality of the original rocks, that is, the structure, tectonics and mineral composition of the original rocks have changed. The new rocks formed by qualitative change are called metamorphic rocks.
Marble is mainly composed of calcite, limestone, serpentine and dolomite. The main component of calcium carbonate-based, accounting for more than 50%. Because marble generally contains impurities, and calcium carbonate in the atmosphere by carbon dioxide, carbide, water vapor role, but also easy to weathering and erosion, leaving the surface soon lost luster. Marble is generally of a relatively soft nature, which is relative to granite.
Because the natural stone surface has fine pores, so the resistance is relatively poor in some, usually in the processing plant will be in its surface for processing. In the interior decoration, TV countertops, windowsill, indoor floor, etc. suitable for use of marble. The threshold, the cabinet countertops, outdoor ground is suitable for the use of granite. Which is the use of counter-cabinet is a dark granite.
Now the market sales of natural stone, part of the color is processed by the people, these stones generally use six months to a year will reveal its true face. It is obvious that the market is now a large flower green, many are stained, not the real color.
A. Because marble generally contains impurities, and calcium carbonate in the atmosphere by carbon dioxide, carbide, water vapor role, but also easy to weathering and erosion, leaving the surface soon lost luster. So a few, such as white marble, Ai Yeqing and other pure quality, less stable and durable varieties can be used for outdoor, other varieties should not be used for outdoor, generally only used for interior decoration. The main varieties are: cloud gray marble, flower marble and so on.
B. Radioactive: natural marble with radioactive, qualified natural marble on the stone's radioactive strict control, the basic will not cause harm to the human body.
Natural marble texture is dense but not hardness, easy processing, carving and grinding, polishing and so on. Marble polished smooth and delicate, natural texture smooth, very high decorative. Marble water absorption is small, high durability, you can use 40-100 years.
B. Natural marble with a fine texture organization, solid, polished as smooth as a mirror, texture more than granite stretch, beautiful. Compressive strength is higher (second only to granite), according to the different rock, up to 300MPa, water absorption is small, wear and deformation characteristics.
Natural marble is the crust of the original rock through the crust in the formation of high temperature and high pressure metamorphic rocks. Belonging to the hard stone, mainly by the calcite, limestone, serpentine and dolomite composition. The main component of calcium carbonate-based, accounting for more than 50%. There are other magnesium carbonate, calcium oxide, manganese oxide and silica.
