Natural marble radiation big?
A class a product can be used in any situation, including office and family rooms;Class B product radioactivity level higher than Class A, can not be used in the interior of the room, can be used for all other buildings in the interior and exterior decoration;C class product radioactivity level is higher than A, B two kinds, can only be used for building exterior decoration.More than C standard control value of natural stone, can only be used for the seawall, piers and stone and other purposes.Because the radioactivity of the stone material is not uniform, the content of the radioactive nuclide in the rock of the same rock mass is different. Conclusion: shop in the stone room, the best selection of class A, and each species should have a corresponding inspection report.For the marble radioactive, experts on the State Bureau of building materials standard that, in nature, the natural radioactivity is the objective existence, also, there are radioactive natural stone products, the key is to see whether it exceeds the national standard. Marble is formed by the influence of external factors such as high temperature and high pressure. Because of the low levels of radioactivity in the composition of calcite and dolomite, the radioactivity of the marble, which is made up of very low radioactive limestone.There are two main aspects of radioactive damage in natural stone, namely, in vivo and in vitro radiation. Radiation in the body is mainly derived from the decay of radioactive radiation in the air. Into the human respiratory system caused by radiation damage, induced lung cancer. In addition, radon also has a high affinity for body fat, thus affecting the nervous system, make people depressed, be sleepy straws. In vitro radiation mainly refers to the radiator direct exposure to natural stone in the human body to produce a biological effect, will cause damage on the human body's hematopoietic organs, nervous system, reproductive system and digestive system.
1, body radiation. A radioactive substance, radon and its daughters, that is derived from the decay of radioactive radiation in the air. Into the human respiratory system caused by radiation damage, induced lung cancer. In addition, radon also has a high affinity for body fat, thus affecting the nervous system, make people depressed, be sleepy straws.2, external radiation. Mainly refers to the radiator directly irradiating human in natural stone material to produce a biological effect, will cause damage on the human body's hematopoietic organs, nervous system, reproductive system and digestive system.The harm of natural marble slightly smaller, artificial marble as the business benefits, will add some other harmful substances, so we at the time of purchase is also ready to work, to avoid buying high radiation marble building materials.According to the radioactive level of natural stone, the natural stone products are divided into three categories: A, B, C.
Marble is formed by the influence of external factors such as high temperature and high pressure. Because of the low levels of radioactivity in the composition of calcite and dolomite, the radioactivity of the marble, which is made up of very low radioactive limestone.There are two main aspects of radioactive damage in natural stone: in vivo and in vitro.
Marble radiation is generally below 13 Gy/h. In the environmental monitoring data in the radiation of 20 Gy/h (micro Gy per hour) the following is not considered hazardous.Need to pay attention to is the color of the more radiant on the high but normal as long as the indoor use is not very strong will be able to buy some light color such as white, beige, etc..For the radioactivity of natural marble, in nature, the natural radioactivity is an objective existence, the same, natural stone products in the presence of radioactivity, the key is to see whether it exceeds the national standards.
