With the development of the economy and the improvement of people's living standards, as a natural building decoration material, marble has gradually become a family with its natural color, fine texture, beautiful texture, good texture and other characteristics, as well as unparalleled advantages and decorative effects. Required decorative materials for decoration. When choosing marble, most people will have a question, "Is marble radioactive?" People pay more attention to health while improving their quality of life. Many people still worry that the radioactivity of marble will be harmful to the human body. Stone experts here are You are puzzled that the marble decoration has no radioactive hazard to the human body. As early as December 2013, the China Stone Association, the National Stone Quality Supervision and Inspection Center, and the National Stone Standardization Technical Committee jointly issued a notice on the non-radioactive harm of marble products to the human body. The notice strongly proves that the marble products have no radiological hazards that affect human health through the following four articles. 1. Marble belongs to sedimentary rocks and is mainly composed of carbonate minerals. From the analysis of geological processes formed by marble, the formation of natural marble is not directly related to radioactive materials, and thus does not have radioactive hazards to human bodies. According to the actual measurement data of stone since the implementation of GB 6566 "Restriction of Radionuclide of Building Materials", the radioactive specific activity of radioactive nuclide ra-226, é’-232 and potassium-40 in natural marble is much lower than that in standard A. Class (unrestricted use) indicators are completely negligible; 2. In the technical requirements of China's stone product standard JC/T 202-2011 "natural marble block" industry standard and GB/T 19766-2005 "natural marble building board" national standard, no radionuclide specific activity is detected. Requirements 3. The society has long lacked understanding of stone classification, and it has been affected by the misunderstanding of marble radioactivity. Marble has been included in the customs inspection project, which has a negative impact on the normal trade of marble. On December 24, 2008, the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China issued the "Regulations on Adjusting the Entry and Exit Commodities for Inspection and Quarantine (2009)", and decided to start from January 1, 2009. Marble and its products (including limestone, sandstone and other natural stone products) are transferred out of the "Procedure Inspection Catalogue", no longer subject to entry and exit inspection and quarantine supervision, that is, marble is no longer subject to radioactive compulsory inspection; 4. Among the two standards involved in the application of stone engineering, there is no requirement to detect the radioactivity of marble in the “Code for the Acceptance of Quality of Building Decoration Engineering†(GB50210-2001). In the original "Code for Indoor Environmental Pollution Control of Civil Building Engineering" (GB50325-2001), marble and granite were uniformly classified as stone, and the radioactivity of marble was required to be tested, resulting in the implementation of marble acceptance criteria in various projects. confusion. Objectively helped the public to misunderstand the harmful radioactivity of marble. Under the active efforts of the Chinese Stone Association and radioactive experts, the Ministry of Housing and Urban-Rural Development adopted the opinions of experts. In 2012, the organization revised the relevant content of the material in the standard (Article 5.2.1), and on June 24, 2013. The announcement of the partial revision of the national standard "Code for Indoor Environmental Pollution Control of Civil Building Engineering" was issued. The newly revised standard clarifies that marble does not require a radiological test report. So far, none of the above two standards of the Ministry of Housing and Construction has required radioactive inspection of marble.
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Stone experts for your understanding: marble decoration is harmless to the human body