Caesium immobilisation in hydrated calcium-silicate-aluminate systems

S. Bagosi, L. J. Csetényi

Research output: Contribution to journalArticlepeer-review

31 Citations (Scopus)


A special field of application of cementitious materials is using cements for immobilisation of low and medium level radioactive wastes. Clarification of mechanisms of binding is complicated by the multicomponent nature of the solidifying matrix. In the present work, interest is turned to one of the most difficult to confine, long half-life isotopes, the caesium isotope. The cement matrix for solidification of the radioactive waste can be considered, with simplification, as a CaO-SiO2-Al2O3-H2O system. The various compositions of hydrated cementitious assemblages were investigated with respect to their Cs sorption by measuring the Cs distribution ratios (Rd,) therein. Trends in sorption properties were detected, and the section of theternary phase diagram with the best performance was identified.

Original languageEnglish
Pages (from-to)1753-1759
Number of pages7
JournalCement and Concrete Research
Issue number12
Publication statusPublished - 30 Dec 1998


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