The behaviours of cementitious materials in long term storage and disposal of radioactive waste: results of a coordinated research project

摘要

The objective of the IAEA CRP was to investigate the behaviour and performance of cementitious materials used in radioactive waste management system with various purposes. These included waste packages, waste forms and backfills as well as investigation of interactions and interdependencies of these individual elements during long term storage and disposal. Fundamental to this is an understanding of the processes that lead to the degradation of the barrier physical and chemical properties. The purposes of these elements in a waste management system are different, and thus the requirements for long term performance and account of degradation mechanisms/consequences may also be different. However all elements are important, as well as interactions envisaged between them, ultimately aiming to ensure the overall safety of a storage/disposal system.