Radiation hardening of constructional cement–magnetite–serpentinite composite under gamma irradiation at increased dose
- Авторы: Yastrebinskii R.1, Bondarenko G.2, Pavlenko V.1
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Учреждения:
- Belgorod State Technological University
- National Research University Higher School of Economics
- Выпуск: Том 8, № 5 (2017)
- Страницы: 691-695
- Раздел: Materials of Power Engineering and Radiation-Resistant Materials
- URL: https://journals.rcsi.science/2075-1133/article/view/206811
- DOI: https://doi.org/10.1134/S207511331705029X
- ID: 206811
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Аннотация
It is shown that a constructional radiation-shielding composite material with high resistance to radiation-thermal loads can be obtained. The material was produced using a Portland cement mix, boron-containing chrysotile, magnetite filler, plasticizing additives, and metal fraction by the vibro-packing method. The content of chemically bound water was at least 1.5 wt %. Exposure to high doses of gamma radiation led to formation of monocalcium ferrite CaFe2O4 with high physical and X-ray density in the cement–magnetite–serpentinite composite. Its formation resulted in radiation hardening and increased the mechanical strength of the composite up to the dose of 10 MGy. When a protective composite was exposed to γ radiation with the absorbed dose of 20 MGy, the mechanical strength of the composite was reduced by only 4–5% compared to that of the unirradiated sample.
Об авторах
R. Yastrebinskii
Belgorod State Technological University
Автор, ответственный за переписку.
Email: yrndo@mail.ru
Россия, Belgorod, 308012
G. Bondarenko
National Research University Higher School of Economics
Email: yrndo@mail.ru
Россия, Moscow, 101000
V. Pavlenko
Belgorod State Technological University
Email: yrndo@mail.ru
Россия, Belgorod, 308012