Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Stability of Cs-Ionsiv in Portland cement blends for radioactive waste disposal
The suitability of Portland cement blends for encapsulation of Cs-Ionsiv in a monolithic wasteform was investigated. No evidence of reaction or dissolution of the Cs-Ionsiv in the cementitious environment was found by scanning electron microscopy and X-ray diffraction. However, a small fraction (<= 1.6 weight-%) of the Cs inventory was released from the encapsulated lonsiv during leaching experiments carried out on hydrated samples. Cs release was enhanced by exchange of K and Na present in the cementitious pore water. Cement systems lower in K and Na, such as slag based blends, showed lower Cs release than the fly ash based analogues.
Stability of Cs-Ionsiv in Portland cement blends for radioactive waste disposal
The suitability of Portland cement blends for encapsulation of Cs-Ionsiv in a monolithic wasteform was investigated. No evidence of reaction or dissolution of the Cs-Ionsiv in the cementitious environment was found by scanning electron microscopy and X-ray diffraction. However, a small fraction (<= 1.6 weight-%) of the Cs inventory was released from the encapsulated lonsiv during leaching experiments carried out on hydrated samples. Cs release was enhanced by exchange of K and Na present in the cementitious pore water. Cement systems lower in K and Na, such as slag based blends, showed lower Cs release than the fly ash based analogues.
Stability of Cs-Ionsiv in Portland cement blends for radioactive waste disposal
Stabilität von Cs-Ionsiv in Portlandzementgemischen für die Lagerung radioaktiver Abfälle
Hyatt, Neil C. (Autor:in) / Jenni, Andreas (Autor:in) / Stennett, Martin C. (Autor:in)
2010
6 Seiten, 7 Bilder, 2 Tabellen, 9 Quellen
Aufsatz (Konferenz)
Englisch
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