Journal
INDOOR AND BUILT ENVIRONMENT
Volume 15, Issue 5, Pages 495-498Publisher
SAGE PUBLICATIONS LTD
DOI: 10.1177/1420326X06069059
Keywords
building materials; radium equivalent; indoor gamma radiation; natural radioactivity
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The activity concentrations of U-238, Th-232 and K-40 in brick, cement and sand samples used as building materials in Manisa province were analysed by a gamma-ray spectroscopy coupled with a Nal (TI) detector. Doses received by the citizens living in Manisa due to these building materials were also calculated. The highest activity concentrations of U-238, Th-232 and K-40 found in the sand samples were 1559.10 Bq(.)kg(-1), 142.48 Bq(.)kg(-1) and 1711.47 Bq(.)kg(-1), respectively. The maximum mean of radium equivalent activity Ra-eq was 945 Bq(.)kg(-1) calculated for levels in sand, gravel and stone samples.
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