期刊
NUCLEAR ENGINEERING AND DESIGN
卷 313, 期 -, 页码 306-318出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.nucengdes.2016.12.029
关键词
Basalt fiber; Boron; Gamma-ray shielding; Neutron shielding; WinXCom; Serpent
资金
- IAEA [20638, T33002]
- Estonian Research Council award [ETF9304]
- ERMOS107 project
- European Social Fund's Doctoral Studies
- Internationalisation Programme DoRa
The importance of radiation shielding is increasing in parallel with the expansion of the application areas of nuclear technologies. This study investigates the radiation shielding properties of two types of high strength concrete reinforced with basalt fibers infused with 12-20% boron oxide, containing varying fractions of natural and enriched boron. The gamma-ray shielding characteristics are analyzed with the help of the WinXCom, whereas the neutron shielding characteristics are modeled and computed by Monte Carlo Serpent code. For gamma-ray shielding, the attenuation coefficients of the studied samples do not display any significant variation due to the addition of basalt-boron fibers at any mixing proportion. For neutron shielding, the addition of basalt-boron fiber has negligible effects in the case of very fast neutrons (14 MeV), but it could considerably improve the neutron shielding of concrete for nuclear facilities producing a fast fission spectrum (e.g. with reactors as BN-800, FBTR) and thermal neutron spectrum (Light Water Reactors (LWR)). It was also found that basalt-boron fiber could decrease the thickness of radiation shielding material in thermal spectrum reactors. (C) 2016 Elsevier B.V. All rights reserved.
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