REPUBLIC OF SERBIA

MINISTRY OF DEFENCE

www.mod.gov.rs

MINISTRY OF DEFENCE

Material Resources Sector

Defensive Technologies Department

Military Technical Institute

www.vti.mod.gov.rs

STUDY ON THE NATURAL RADIOACTIVITY REGULATION  STANDARD  FOR BUILDING MATERIALS

NATAŠA PAJIĆ

Military Technical Institute, Belgrade, natasa.pajic@eunet.rs

TATJANA MARKOVIĆ

Military Technical Institute, Belgrade, tanjin.mejl@gmail.com

Abstract: This paper shows the results of the mass action measurements for radionuclides in granite and marble samples. Gamma spectrometry analysis has been conducted using a high purity germanium (HPGe) detector, and the mass actions of the ²²⁶Ra, ²³²Th and ⁴⁰K radionuclides in the tested samples satisfy (except in two cases) the criteria for the use of these materials in civil engineering and building construction. A few granite and marble samples have radioactivity levels higher than the annual limit of 1mSv. Granite is usually used for flooring. A limiting factor for granites as decorative elements on floors and walls is not required.

Key words: gamma spectrometry, radionuclide, granite, decorative materials.