Screening composite building materials and building elements for construction of objects with low internal level of ionizing radiation

摘要

ufeffstu00ednicu00ed composite building material for building elements, which are based on aggregate, cement and water, or on the basis of aggregates and epoxy resin, the mass activity contained in the radionuclides for radionuclide ra 226 lower than 5 bq / kg for radionuclide th 228 niu017eu0161 e than 5 bg / kg and radionuclide k40 less than 50 bg / kg.aggregates and mineral components of cement are composed of materials of prvohornu00edch geological formations.