Ceramic tiles are one of the commonly used decorative building materials.
Body of ceramic tiles is a mixture of different raw materials including
clays, quartz materials and feldspat, and may be glazed or left unglazed. Due
to the presence of zircon in the glaze, ceramic tiles can show natural
radioactivity concentration significantly higher than the average values for
building materials. This study presents a summary of results obtained by a
survey which was consisted of measurements of activity concentrations of
natural radionuclides in imported ceramic tile samples used in Serbia using a
gamma spectrometer with HPGe detector. Based on the obtained concentrations,
gamma index, radium equivalent activity, the indoor absorbed dose rate and
the corresponding annual effective dose were evaluated to assess the
potential radiological hazard associated with these building materials.
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