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This paper considers the properties of cement composites used as an engineered barrier against the release of radionuclides in repositories for the storage and disposal of radioactive waste. After a discussion of the leaching process and the diffusion mechanism responsible for the release of soluble elements such as caesium, physical factors are analysed, in particular the effect of the water/cement ratio on porosity and compressive strength. Factors affecting leaching, including the effects of flow water, PCO(2) and pH, are also analysed.

Additional information

Authors: ZAMORANI E, JRC Ispra (IT)
Bibliographic Reference: Paper presented: 15th International Symposium on the Scientific Basis for Nuclear Waste Management, Strasbourg (FR), Nov. 4-7, 1991
Availability: Available from (1) as Paper EN 36467 ORA
Record Number: 199111551 / Last updated on: 1994-12-02
Original language: en
Available languages: en