5. Conclusion
As concrete ages, changes in its properties occur due to ongoing microstructural changes (e.g. slow hydration, crystallization of amorphous components, reactions between cement paste and aggregates), as well as environmental influences. These changes must not be detrimental to the performance requirements imposed on the concrete. This article has presented: (i) a description of the basic materials used in the manufacture of reinforced concrete, (ii) a review of concrete ageing as a function of structures and environmental conditions, and (iii) information on the ageing management of concrete structures in nuclear power plants. Several areas in which further research would be beneficial for the ageing management of concrete structures in nuclear power plants can be suggested:
1) Improved damage models and acceptance criteria for use in current condition assessments,...
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