Bibliographic citations
Liza, R., (2023). Riesgo radiológico debido a la radiactividad natural y exhalación de radón de suelos y materiales de construcción peruanos [Pontificia Universidad Católica del Perú]. http://hdl.handle.net/20.500.12404/25313
Liza, R., Riesgo radiológico debido a la radiactividad natural y exhalación de radón de suelos y materiales de construcción peruanos []. PE: Pontificia Universidad Católica del Perú; 2023. http://hdl.handle.net/20.500.12404/25313
@phdthesis{renati/28453,
title = "Riesgo radiológico debido a la radiactividad natural y exhalación de radón de suelos y materiales de construcción peruanos",
author = "Liza Neciosup, Rafael Ángel",
publisher = "Pontificia Universidad Católica del Perú",
year = "2023"
}
Radon exposure is a major concern due to its role in increasing the risk of lung cancer. To assess radiation exposure risks, measuring radon levels indoor air and characterizing the radiological hazard due to building materials is necessary. The radon exhalation rate in building materials was measured by closed-chamber accumulation over 24 h for dissociated or pulverized samples and 28 days for compacted materials. The Radon concentration in the chamber is measured regularly during this period and is used to calculate the Radon mass exhalation rate and Radon surface exhalation rate, respectively. In the case of soils, the radiological risk is associated with the geogenic potential of Radon. This parameter is obtained from the permeability and the concentration of Radon in the ground. The results of this study show that the radon exhalation rate in building materials and soils can vary significantly. In building materials, an average exhalation rate of 14.01 ± 1.04 mBq kg−1h −1 was found, with a range of [4.50 ± 0.42] to [22.34 ± 1.30] mBq kg−1 h −1 . In addition, a good correlation was found between the total Radium concentration in building materials and the Radon exhalation rate, with a correlation coefficient (R2 0.88). The radon exhalation rate in bricks is higher than in other samples. It can be because the area of raw material extraction for the elaboration of bricks is the closest to the uranium-producing possible regions. Gypsum samples did not show significant radon exhalation, which is consistent with the amount of radium in these samples. Finally, the results obtained for radiological indexes (Radium equivalent Raeq, Gamma index Iγ, and External hazard Hex) all types of samples are suitable for use as building materials because they present a low activity concentration.
This item is licensed under a Creative Commons License