Determination of natural radioactivity and the associated radiation hazards in building materials used in Polur, Tiruvannamalai District, Tamilnadu, India using gamma ray spectrometry with statistical approach

2016 ◽  
Vol 163 ◽  
pp. 41-52 ◽  
Author(s):  
R. Ravisankar ◽  
Y. Raghu ◽  
A. Chandrasekaran ◽  
M. Suresh Gandhi ◽  
P. Vijayagopal ◽  
...  
Keyword(s):  
Natural Radioactivity ◽  
Building Materials ◽  
Statistical Approach ◽  
Gamma Ray ◽  
Gamma Ray Spectrometry ◽  
Radiation Hazards ◽  
Materials Used

scholarly journals Natural radioactivity level in materials used for medieval vaulting in the territory of the central Balkan region

2016 ◽  
Vol 31 (2) ◽  
pp. 184-189 ◽  
Author(s):  
Igor Bjelic ◽  
Dragana Todorovic ◽  
Jelena Krneta-Nikolic ◽  
Djordje Lazarevic ◽  
Koviljka Stankovic
Keyword(s):  
Natural Radioactivity ◽  
Building Materials ◽  
Gamma Ray ◽  
Health Hazard ◽  
Hazard Index ◽  
Absorbed Dose ◽  
Balkan Peninsula ◽  
Gamma Ray Spectrometry ◽  
Balkan Region ◽  
Materials Used

This work presents the results of an investigation undertaken to determine the level of natural radioactivity in the traditional building materials used for medieval indoor vaulted constructions in the territory of the central Balkan region. Indoor radiation exposure varies appreciably if it comes from the earth building materials, hence the presence of natural radioisotopes of 226Ra, 232Th, and 40K in masonry vaulted constructions was analyzed using gamma ray spectrometry. In addition, the internal health hazard index, the absorbed dose rates and the effective annual doses were calculated. The results were then compared both with the reported data from the previous studies concerning the territory of the Balkan Peninsula, as well as with the worldwide values for the materials of historic buildings. The results obtained from the materials examined in this paper all showed the radioactivity levels below the maximum permitted values.

scholarly journals Natural Radioactivity, Radiological Hazard and Petrographical Studies on Aswan Granites Used as Building Materials in Egypt

2021 ◽  
Vol 11 (14) ◽  
pp. 6471
Author(s):  
Nasser M. Moghazy ◽  
Amira M. El-Tohamy ◽  
Mona M. Fawzy ◽  
Hamdy A. Awad ◽  
Hesham M. H. Zakaly ◽  
...  
Keyword(s):  
Natural Radioactivity ◽  
Building Materials ◽  
Gamma Ray ◽  
Natural Radionuclides ◽  
Polarized Light ◽  
Environmental Parameters ◽  
Mineralogical Composition ◽  
Eastern Desert ◽  
Granitic Rocks ◽  
Gamma Ray Spectrometry

The present study was carried out on commercial types of Aswan granite used as building and decorative materials. Nearly 29 granitic rocks samples from 11 classes (black Aswan, red Aswan, dark Rosa, light Rosa, yellow Verdi, grey Shirka, Gandolla, Forsan, red Nefertiti, Royal, and white Halayeb) were collected from three stations near Aswan city for petrographical description and assessment of natural radioactivity. The petrographical study of granites was conducted by polarized-light microscope in order to determine their mineralogical composition and investigate their texture; the activity of the natural radionuclides 238U, Ra226, 232Th, and 40K was measured by gamma-ray spectrometry with a NaI(Tl) detector. The average values of the activities, 52.2 Bq kg−1, 57.8 Bq kg−1, 31.2 Bq kg−1, and 1055.7 Bq kg−1 of U-238, Th-232, Ra-226, and K-40, respectively, were higher than that the world average values of 35 Bq kg−1, 30 Bq kg−1 and 400 Bq kg−1 for 226Ra, 232Th, and 40K, respectively, according to the recommended levels from UNSCEAR reports. The minimum and maximum values obtained were compared with the value ranges from other locations in the Eastern Desert, highlighting the fact that that the maximum values obtained in this work are higher than those in other areas. According to the radiological hazards indices results, most samples lie in the permissible level ranges, suggesting their favorability for use as building materials. In contrast to that, some samples have some environmental parameters higher than the international levels, indicating their unsuitability as building materials.

Determination of natural radioactivity in building materials used in the Karachi area by γ-ray spectrometry and INAA

2004 ◽  
Vol 92 (12) ◽  
Author(s):  
Jamshed H. Zaidi ◽  
M. Arif ◽  
I. Fatima
Keyword(s):  
Natural Radioactivity ◽  
Building Materials ◽  
Natural Radionuclides ◽  
Γ Ray ◽  
Materials Used

SummarySamples of sand, stone and manufactured building materials collected from Karachi area have been analyzed for the primordial natural radionuclides

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