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- Title
Natural radioactivity in building materials used in Changzhi, China.
- Authors
Yang, Guang; Lu, Xinwei; Zhao, Caifeng; Li, Nan
- Abstract
The natural radioactivity levels of the commonly used building materials collected from Changzhi, China was analysed using gamma-ray spectroscopy. The activity concentrations of 226Ra, 232Th and 40K in the investigated building materials range from 14.6 to 131.2, from 9.9 to 138.8 and from 96.1 to 819.0 Bq kg−1, respectively. The results were compared with the reported data of other countries and with the worldwide mean activity of soil. The external and internal hazard indices and gamma index were calculated to assess the radiation hazard to residents. The external hazard index of all building materials are less than unity, while the internal hazard and gamma indexes of hollow brick and gravel aggregate exceed unity. The study shows that the investigated hollow brick and gravel aggregate are not suitable for use as building materials in dwellings.
- Subjects
CHINA; BACKGROUND radiation; RADIOACTIVITY measurements; CONSTRUCTION materials; GAMMA-ray devices
- Publication
Radiation Protection Dosimetry, 2013, Vol 155, Issue 4, p512
- ISSN
0144-8420
- Publication type
Article
- DOI
10.1093/rpd/nct018