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Effects of cement additives on radionuclide mobility
KTH, Superseded Departments, Chemistry.
2004 (English)In: Mater Res Soc Symp Proc, 2004, 639-644 p.Conference paper, Published paper (Refereed)
Abstract [en]

The effects of organic cement additives (totally 7) on the sorption of Eu on cement and TiO2 were measured with variation of the concentration of the additive (0.001-10% of the water phase) and reaction time (up to 420 d). There was a significant reduction of the sorption of Eu on cement as well as on TiO2 after 24 h of exposure time in the presence of additives at levels that would be obtained in a cement/water system if the total load of the additive in the cement (up to 3%) would be released into the water phase. Sorption increased with time and would be expected to reach constant levels after 100-200 d. Storage of the additives at 60 and 120°C, pH 12.5, for up to 110 d (in order to degrade them) did not lead to significantly altered sorption behaviour.

Place, publisher, year, edition, pages
2004. 639-644 p.
Series
Materials Research Society Symposium Proceedings, ISSN 0272-9172 ; 807
Keyword [en]
Additives, Cements, Copolymers, Europium compounds, Light scattering, Radioactive wastes, Sorption, Titanium oxides, Water, Artificial pore water, Fibre-glass filters, Gamma-activity, Gamma-counting, Radioisotopes
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:kth:diva-157564ISI: 000225038400104Scopus ID: 2-s2.0-12844272197OAI: oai:DiVA.org:kth-157564DiVA: diva2:770794
Conference
Scientific Basis for Nuclear Waste Management XXVII, 15-19 June 2003, Kalmar, Sweden
Note

QC 20141211

Available from: 2014-12-11 Created: 2014-12-11 Last updated: 2014-12-11Bibliographically approved

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