Published 1997
| Version v1
Journal article
Retention capacity of the calcium silicates hydrates (CSH) for caesium
- 1. CEA Centre d'Etudes Nucleaires de Saclay, 91 -Gif-sur-Yvette (France). Service Chimie Moleculaire
- 2. Service d'Entreposage et de Stockage des Dechets, CEA Saclay, Gif sur Yvette (France)
- 3. Service de Physique de l'Etat Condense, CEA Saclay, Gif sur Yvette (France)
Description
Alkalis are poorly trapped by cement and this constitutes one of the problem for the use of cement as nuclear waste matrix. Therefore we have studied the sorption of 137Cs on the CSH which are the major components of a Portland cement. CSH of different Ca/Si has been synthetised in suspension. Caesium chloride, which is highly soluble, was placed in a reactor with the CSH. To have a high precision for the caesium quantity fixed by the CSH, radioactive caesium was used as tracer. We observed that the maximum exchange capacity occurs at low Ca/Si ratio, when the structure is close to that of tobermorite. A Cs/Ca molar ratio around one could be obtained in this structure. (orig.)
Additional details
Publishing Information
- Journal Title
- Key Engineering Materials
- Journal Volume
- 132-136
- Journal Issue
- pt.3
- Journal Page Range
- p. 2204-2207.
- ISSN
- 1013-9826
- CODEN
- KEMAEY
Conference
- Title
- 5. conference and exposition of the European Ceramic Society (ECerS).
- Original Conference Title
- 5. Conference et Exposition de la Societe Europeenne de Ceramique
- Dates
- 22-26 Jun 1997.
- Place
- Versailles (France).
INIS
- Country of Publication
- Switzerland
- Country of Input or Organization
- Switzerland
- INIS RN
- 29018995
- Subject category
- S12: MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- CALCIUM SILICATES; CEMENTS; CESIUM 137; HYDRATES; ION EXCHANGE; RADIOACTIVE WASTES; SORPTION
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; BUILDING MATERIALS; CALCIUM COMPOUNDS; CESIUM ISOTOPES; INTERMEDIATE MASS NUCLEI; ISOTOPES; MATERIALS; NUCLEI; ODD-EVEN NUCLEI; OXYGEN COMPOUNDS; RADIOACTIVE MATERIALS; RADIOISOTOPES; SILICATES; SILICON COMPOUNDS; WASTES; YEARS LIVING RADIOISOTOPES
Optional Information
- Notes
- 8 refs.