Historical
GB 6566-2001
Limit of radionuclides in building materials (TEXT OF DOCUMENT IS IN CHINESE)
This standard specifies the limits and test methods for radiation specific activity of such natural radionuclides as radium-226, potassium-40, and thorium-232 in the building materials.
This standard applies to inorganic nonmetal building materials for use in construction of all kinds of buildings, including building materials mixed with industrial waste slag.
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CHINESE GB Standards [spc]