Natural radioactivity in building materials utilized in the State of Kuwait

Bou-Rabee, F.; Bem, H.

doi:10.1007/bf02165246

Cited by 54 publications

(11 citation statements)

References 8 publications

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“…Ra eq is higher than or comparable with that observed in other countries except those measured in China, Algeria, Brazil, Bangladesh and Malaysia (Alam et al, 1999;Amrani & Tahtat, 2001;Malanca et al, 1993;Mantazual et al, 1998;Ibrahim, 1999;Xinwei, 2005;). For white cement, the concentration of 226 Ra, 232 Th, 40 K and Ra eq activities are higher than that obtained in other countries except that the concentration of 226 Ra is less than that observed in Turkey & Pakistan (Mujahid et al, 2008;Turhan, Baykan & Sen, 2008) and 40 K is less than that measured in Kuwait (Bou-Rabee & Bem, 1996). uranium or radium, since the radon exhalation rate depends on the texture and grain size composition.…”

Section: Alpha Indexcontrasting

confidence: 54%

A study of the natural radioactivity and radon exhalation rate in some cements used in India and its radiological significance

Sharma

Singh

Esakki

et al. 2016

Journal of Radiation Research and Applied Sciences

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The presence of natural radioactivity and radon exhalation from building materials contribute to the radiation dose received by human. So, it is essential to evaluate the activity levels of the primordial radionuclides (238 U, 226 Ra, 232 Th and 40 K) present in the building materials for the assessment of natural radiation dose. Cement is one of the major component of the building materials and is used on a large scale. In the present study, the commercially available cement samples of fifteen different brands were used to study the radon exhalation rate and activity concentration of 238 U, 226 Ra, 232 Th and 40 K nuclides. The radon exhalation rate was measured using the can technique, while the concentration of radionuclides content was determined by using gamma ray spectroscopy. The radon exhalation rate from different brands of cements was found in the range from 1.56 to 13.1 mBqkg À1 h À1 with a mean value of 5.27 mBqkg À1 h À1. The specific activity of uranium was found in the range 45.3e218.9 Bqkg À1 with a mean value of 111.2 Bqkg À1 ; 226 Ra from 20.3 to 60.1 Bqkg À1 with a mean value of 35.8 Bqkg À1 ; 232 Th from 18.8 to 60.1 Bqkg À1 with a mean value of 33.2 Bqkg À1 and 40 K varied from 160.9 to 248.1 Bqkg À1 with a mean value of 199.1 Bqkg À1. The radiological parameters e radium equivalent activity, absorbed dose rate, annual effective dose, external hazard index, internal hazard index, gamma activity index and alpha index were also evaluated to assess the potential radiological hazard associated with these cement samples. Correlation coefficients for the different radionuclides have been evaluated and studied.

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Section: Alpha Indexcontrasting

confidence: 54%

A study of the natural radioactivity and radon exhalation rate in some cements used in India and its radiological significance

Sharma

Singh

Esakki

et al. 2016

Journal of Radiation Research and Applied Sciences

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“…The specific activities of materials containing various level of 226 Ra, 232 Th and 40 K is difficult to compare; so therefore, radium equivalent index was introduced. Radium equivalent (Ra eq ) was calculated from equation (3): 19–22 where C Ra , C Th , and C K are the specific activities concentration of 226 Ra, 232 Th, and 40 K, respectively. The calculation of radium equivalent concentration was based on the assumption that 370 Bq kg −1 of 226 Ra, 259 Bq kg −1 of 232 Th, and 4810 Bq kg −1 of 40 K produce the same γ-rays radiation dose of 1.5 mSv y −1 .…”

Section: Resultsmentioning

confidence: 99%

Assessment of radiation hazards due to exposure to radionuclides in marble and ceramic commonly used as decorative building materials in Egypt

Hassan

Mansour

Fayez-Hassan

et al. 2016

Indoor and Built Environment

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“…The activity concentration of natural radionuclides in construction materials has been estimated in various countries and areas of the world such as Australia,[14] Bangladesh,[15] Pakistan,[1617] Tanzania,[18] Eastern Europe,[19] Syria,[20] Kuwait,[21] China,[22] Egypt,[23242526] and Cyprus. [27]…”

Section: Discussionmentioning

confidence: 99%

A review on natural background radiation

2013

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The world is naturally radioactive and approximately 82% of human-absorbed radiation doses, which are out of control, arise from natural sources such as cosmic, terrestrial, and exposure from inhalation or intake radiation sources. In recent years, several international studies have been carried out, which have reported different values regarding the effect of background radiation on human health. Gamma radiation emitted from natural sources (background radiation) is largely due to primordial radionuclides, mainly 232Th and 238U series, and their decay products, as well as 40K, which exist at trace levels in the earth's crust. Their concentrations in soil, sands, and rocks depend on the local geology of each region in the world. Naturally occurring radioactive materials generally contain terrestrial-origin radionuclides, left over since the creation of the earth. In addition, the existence of some springs and quarries increases the dose rate of background radiation in some regions that are known as high level background radiation regions. The type of building materials used in houses can also affect the dose rate of background radiations. The present review article was carried out to consider all of the natural radiations, including cosmic, terrestrial, and food radiation.

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Natural radioactivity in building materials utilized in the State of Kuwait

Cited by 54 publications

References 8 publications

A study of the natural radioactivity and radon exhalation rate in some cements used in India and its radiological significance

A study of the natural radioactivity and radon exhalation rate in some cements used in India and its radiological significance

Assessment of radiation hazards due to exposure to radionuclides in marble and ceramic commonly used as decorative building materials in Egypt

A review on natural background radiation

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