Natural marble is mined from metamorphic rocks formed from sedimentary rocks in the earth's crust subjected to high temperature and high pressure. Artificial marble is made from crushed stones, powders and synthetic resins and other raw materials cured at high temperatures. Generally speaking, the radiation of both is harmful to the human body. no harm. Natural marble is mainly composed of calcite, limestone, serpentine and dolomite, and its main component is calcium carbonate, accounting for more than 55%. Among them, Foshan white marble has the highest proportion of calcium carbonate, accounting for more than 99%, and is also called heavy calcium stone. . The components of natural marble do not have any harmful metal components or high-radiation substances.
The level of marble radiation can be seen from its internal exposure index and external illumination color index; imported tiles submitted for inspection, domestic tiles submitted for inspection, imported marble submitted for inspection, domestic marble internal exposure index 0.59 0.32 0.07 0.02 external exposure index 1.18 0.54 0.04 0.11 The test results show that the internal radiation index and external radiation index of marble are much lower than that of ceramic tile materials. It can be said that the radiation of natural marble is several times lower than that of ceramic tiles. Although the radiation of tiles is higher than that of marble, it does not exceed the harmful internal and external radiation standards, and is a healthy and environmentally friendly decorative material. The main raw material of artificial marble is dolomite, which is natural marble crushed stone and powder, accounting for more than 95%. It can be said that the internal radiation index and external radiation index of artificial marble are similar to those of natural marble, and they are all healthy, safe and environmentally friendly building materials. .
The main raw material of artificial marble is natural marble, so the radiation index of the two is basically the same, and the internal radiation index and external radiation index are far lower than solid wood and glass materials.