Gibbsite- and kuzelite-based matrix for the preservation of radioactive aqueous sodium nitrate concentrates

Kononenko, O.A.; Makarenkov, V.I.

Авторы: Kononenko O.A., Makarenkov V.I.
Журнал: Atomic Energy
Том: 134
Год издания: 2023
Издательство: Springer Nature
Местоположение издательства: Switzerland
Первая страница: 322
Последняя страница: 331
Оригинальные версии: Матрицы на основе гиббсита и кузелита для консервации радиоактивных водных концентратов нитрата натрия
DOI: 10.1007/s10512-024-01061-3
Аннотация: The article studies the possibility of using a matrix of gibbsite and kuzelite for the preservation of liquidradioactive wastes consisting of aqueous NaNO3 concentrates. The matrix is formed during the solidification ofthese wastes with cement, consisting of calcium aluminate and gypsum. The requirements for cemented solidwaste are met by a matrix obtained from a mixture of the following composition: 45.2%-NaNO3 solution 53.04%;gypsum—5.4%; calcium aluminate—36.16%; diatomite powder treated with polydiallyldimethylammoniumchloride (polyDADMAC)—5.4%. The matrix has the following characteristics: ratio of matrix and cementedsolution volumes—1.45; average 137Cs leaching rate for 90 days—1.410–4g/(cm2day); strength—15.2MPa,including after the tests for water resistance, 30 freezing-thawing cycles, and irradiation to a dose of 1MGy—6.8,15.4, and 9.6MPa, respectively.
Добавил в систему: Кононенко Олег Анатольевич

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Gibbsite- and kuzelite-based matrix for the preservation of radioactive aqueous sodium nitrate concentratesстатья