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Radiolysis of Portland Cement and Magnesium Phosphate Cement: Effect of the Content and State of Water on the Physicochemical Properties and the Mechanism and Kinetics of Hydrogen Formationстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 22 декабря 2021 г.
- Авторы: Bykov G.L., Abkhalimov E.V., Ershov V.A., Ershov B.G.
- Журнал: Radiation Physics and Chemistry
- Том: 190
- Год издания: 2022
- Издательство: Elsevier
- Местоположение издательства: United States
- Номер статьи: 109822
- DOI: 10.1016/j.radphyschem.2021.109822
- Аннотация: The radiation stability of Portland cement and magnesium phosphate cement on γ-irradiation was studied up the absorbed dose of 100 MGy. The radiation chemical decomposition of water contained in the cements was accompanied by hydrogen evolution. The evolution was retarded as the dose increased, with the limiting gas concentration, ∼2.6 L and ∼0.7 L kg−1 of Portland cement and magnesium phosphate cement, respectively, being attained at ∼20 MGy. Oxygen was not released to free volume, but was entrapped by components of the materials. In the case of magnesium phosphate cement, the formation of MgO2 was established. A formal model for cement radiolysis was proposed, and an equation describing the hydrogen accumulation was derived. The formation of hydrogen did not induce swelling or destruction of the cements. The results can be used to assess the level of activity of radioactive waste that may be immobilized in these matrices.
- Добавил в систему: Абхалимов Евгений Владиленович
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | Полный текст | Statya_2022.pdf | 5,6 МБ | 14 декабря 2021 [BykovGL] |