Contribution of the results of the CEBAMA project to decrease uncertainties in the Safety Case and Performance Assessment of radioactive waste repositories

Lara Duro (Corresponding Author), Marcus Altmaier, Erika Holt, Urs Mäder, Francis Claret, Bernd Grambow, Andrés Idiart, Alba Valls, Vanessa Montoya

Research output: Contribution to journalArticleScientificpeer-review

3 Citations (Scopus)

Abstract

Cement-based materials are key materials used in repositories of low, intermediate and high-level radioactive waste in any host-rock concept. These materials are used for waste conditioning, liners, seals as well as structural components. The CEBAMA (CEment-BAsed MAterials, properties, evolution, barrier functions) project (2015–2019) has been an initiative granted by the European Commission under the Horizon 2020 Research and Training Programme of the European Atomic Energy Community (EURATOM), focused on the study of cementitious materials. The project has addressed key issues of relevance for long-term safety and key scientific questions related to the use of cement-based materials in nuclear waste disposal applications. This publication presents the advances resulting from the research undertaken in the CEBAMA project, with special emphasis on their contribution to decrease uncertainties in the Safety Case and the Performance Assessment of radioactive waste repositories. The analysis is presented in three different axes, in coincidence with the lines of research of the project: degradation of cement-based materials and its impact on cement/clay interfaces; retention of safety relevant radionuclides and toxicants on cement-based materials and modelling advances in cementitious related systems. The research investigations have provided important new insights on process understanding and model developments which have significantly decreased the level of uncertainty.

Original languageEnglish
Article number104479
JournalApplied Geochemistry
Volume112
Early online date26 Nov 2019
DOIs
Publication statusPublished - Jan 2020
MoE publication typeA1 Journal article-refereed

Keywords

  • Cement
  • Clay-concrete interactions
  • Low-pH concrete
  • Radioactive waste
  • Radionuclide sorption
  • Radionuclide-cement interaction
  • Safety case

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