Stability of Cs-Ionsiv in Portland cement blends for radioactive waste disposal

Hyatt, N. C.; Jenni, Andreas; Stennett, M. C. (2010). Stability of Cs-Ionsiv in Portland cement blends for radioactive waste disposal. Materials Research Society Symposium Proceedings, 1265, pp. 221-226. Materials Research Society

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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 wt%) of the Cs inventory was released from the encapsulated Ionsiv 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. © 2010 Materials Research Society.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Institute of Geological Sciences

UniBE Contributor:

Jenni, Andreas

Subjects:

500 Science > 550 Earth sciences & geology

ISSN:

0272-9172

Publisher:

Materials Research Society

Language:

English

Submitter:

Andreas Jenni

Date Deposited:

25 Jul 2016 14:59

Last Modified:

25 Jul 2016 14:59

URI:

https://boris.unibe.ch/id/eprint/85089

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