Characterization of gas concrete materials used in buildings of Turkey

DAMLA N., ÇEVİK U., KOBYA A. I., Celik A., VAN GRIEKEN R., KOBYA Y.

JOURNAL OF HAZARDOUS MATERIALS, cilt.168, ss.681-687, 2009 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 168
  • Basım Tarihi: 2009
  • Doi Numarası: 10.1016/j.jhazmat.2009.02.092
  • Dergi Adı: JOURNAL OF HAZARDOUS MATERIALS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.681-687
  • Anahtar Kelimeler: Gas concrete, Radioactivity, Mass attenuation, Chemical analysis, Turkey, NATURAL RADIOACTIVITY, ATTENUATION COEFFICIENT, PHOTON ATTENUATION, GAMMA-RADIATION, DOSE-RATE, DWELLINGS
  • Karadeniz Teknik Üniversitesi Adresli: Evet

Özet

The activity concentration of (226)Ra, (232)Th and (40)K in gas concrete samples collected from different suppliers and some provinces in Turkey were measured using gamma-ray spectrometry. Knowledge of radioactivity in gas concrete used in building materials enables one to assess any possible radiological risks to human health. The mean activity concentrations observed in the gas concrete samples were 82.0,28.2 and 383.9 Bq kg(-1) for (226)Ra, (232)Th and (40)K, respectively. The radium equivalent activity, external and internal hazard indices as well as terrestrial absorbed dose and annual effective dose rate was calculated. The results indicate that the radium equivalent activity values of gas concrete samples are lower than the limit of 370 Bq kg(-1), equivalent to a gamma-dose of 1.5 mSv y(-1). Moreover, mass attenuation coefficients were measured in some gas concrete samples. It was found that the mass attenuation coefficients decreased with increasing photon energies. Also, chemical compositions and structural analysis (XRD and SEM) of the gas concrete samples were investigated. (c) 2009 Elsevier B.V. All rights reserved.