1 Some definitions and terminology -- 1.1 Service Life -- 1.2 Long-term behaviour -- 1.3 Ageing Management -- References -- 2 Materials and Properties -- 2.1 Introduction -- 2.2 Blended cements and hydrated phase prediction -- 2.3 Characterization of low pH-cementitious materials -- 2.4 Fiber reinforced and advanced cement-based materials -- 2.5 Transport Properties -- 2.6 Coupled Phenomena and Materials Behaviour -- 2.7 Carbonation and Oxidation of Cementitious Materials -- 2.8 Leaching -- 2.9 Desiccation and pre-cracking in cement pastes and mortars -- 2.10 Understanding Durability and Performance in the Context of Specific Applications -- 2.11 Integration for Application to Engineering Systems -- 2.12 RILEM TC-226-CNM recommendations for future R&D -- References -- 3 Corrosion -- 3.1 Introduction -- 3.2 Corrosion of metals in concrete for nuclear applications -- 3.3 Corrosion mechanisms -- 3.4 Corrosion modelling -- 3.5 Corrosion test programmes -- 3.6 Effects of concrete cracking on corrosion behaviour -- 3.7 RILEM TC-226-CNM recommendations for future R&D -- References -- 4 Aging Management of Concrete Structures of NPPs -- 4.1 Introduction -- 4.2 Aging Management of Concrete Structures of NPPs -- 4.3 Conclusion -- 4.4 RILEM TC-226-CNM recommendations for future R&D -- References -- 5 Waste Management and Performance Assessment -- 5.1 Introduction -- 5.2 Role and durability of cement barriers in waste storage and disposal -- 5.3 Impact of gas generation and carbonation of cement systems -- 5.4 Conclusions -- 5.5 RILEM TC-226-CNM recommendations for future R&D -- References -- 6 Conclusions.  .