Gamma radiation shielding and health physics characteristics of diaspore-flyash concretes

Abstract

Different gamma radiation interaction parameters has been measured experimentally for the prepared diaspore-flyash concretes at 59.54, 662, 1173 and 1332 keV using narrow-beam transmission geometry and results are found to be in good agreement with theoretical values computed with a computer programme, WinXCom. The radiation exposure rate and absorbed dose rate for the gamma radiation with and without shielding of diaspore-flyash concretes have been determined using linear attenuation results. The results show that on average, there is reduction of 95%, 53% and 40% in dose rate for gamma sources (241)Am, (137)Cs and (60)Co, respectively with diaspore-flyash concretes as shielding material. Other health physics parameters namely equivalent dose, effective dose, gamma flux and energy fluence rate have also been determined.

Gamma radiation shielding properties of some Bi-Sn-Zn alloys

“…Lead has been used extensively as an admixture in building materials such as concrete to achieve radiation shielding properties [2]. Fly ash is another ingredient commonly used in construction materials as a substitute for cement and sand, so as to investigate their efficiency as shielding blocks against gamma rays [2][3][4].…”

Neutron and photon scattering properties of high density concretes used in radiation therapy facilities: A Monte Carlo study

“…HDCs(HDC) with density higher than 2.45 are frequently used in radiation facilities where the thinner walls are required for construction and shielding purposes. HDCs are made by adding high atomic number elements such as Fe, Ba, and Pb into concrete composition [1][2][3][4][5][6][7][8][9][10][11][12][13]. The minerals containing these high Z materials can be used with different concentrations to provide concretes with higher densities.…”

Investigation of gamma ray shielding efficiency and mechanical performances of concrete shields containing bismuth oxide as an environmentally friendly additive

“…In recent years, an increased interest in radiation shielding concrete mixtures has motivated the development and testing of different experimental concrete mixtures. Many of these researches in the shielding concrete field have been limited to the use of different aggregates (Akkurt et al, 2010;Akkurt and Canakci, 2011;Gencel et al, 2011;Mostofinejad et al, 2012;Ouda, 2015;Singh et al, 2015;Topçu, 2003). However, recent research efforts have considered the use of different additives to enhance the shielding properties of concrete (González-Ortega et al, 2014;Mostofinejad et al, 2012;Oto et al, 2013;Ouda, 2015;Singh et al, 2015;Waly and Bourham, 2015;Yaltay et al, 2015).…”