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Proceedings pro064 : RILEM Workshop on Long-Term Performance of Cementitious Barriers and Reinforced Concrete in Nuclear Power Plants and Waste Mangement


Title: RILEM Workshop on Long-Term Performance of Cementitious Barriers and Reinforced Concrete in Nuclear Power Plants and Waste Mangement
Edited by V. L'Hostis, R. Gens, C. Gallé
ISBN: 978-2-35158-072-1
e-ISBN: 978-2-35158-087-5
Pages: 359
Publication date: 2009

After the successful NUCPERF 2006 workshop dedicated to corrosion and long-term performance of reinforced concrete in nuclear power plants and waste facilities, the organizers and the sponsor organizations proposed that NUCPERF 2009 meeting focus on the long-term performance of cementitious barriers and reinforced concrete in nuclear power plants and
waste management structures. The NUCPERF 2009 workshop hosted by Dr. Valérie L’Hostis from the Commissariat à l’Energie Atomique (CEA) was held in Cadarache from March 30 - April 2, 2009. This event was a part of the activities of the RILEM Technical Committee 'Concrete in the context of the nuclear management' (TC 226-CNM). The event was sponsored by the European Federation of Corrosion (EFC), Nuclear Corrosion (WP 4) and Corrosion in Concrete (WP 11) Working Parties. The Committee for Safety of Nuclear
Installations (CSNI) of the OECD/NEA was also involved in the event.

Many of the facilities and structures used for the processing , the temporary storage and the
disposal of radioactive waste materials generated by the nuclear power plant fuel cycle use
concrete in their construction. These structures are required to function safely and reliably in
challenging and varying environments for periods of time that can potentially range up to
thousands of years. During their operational life, these structures will in all likelihood be
subjected to a number of environmental stresses or ageing factors that may adversely affect
their performance and result in shortened service lives.

Within this context, the workshop aimed at:
- presenting the expectations of regulators, implementers, designers, operators of
facility and researchers with regard to concrete structures,
- discussing R&D progress with regard to concrete degradation and corrosion of steel
reinforcements,
- reaching a consensus on R&D needs to further develop cooperative programs.

The sessions of the workshop covered the following areas: (1) Present and future
expectations, (2) Thermo-Hydro-Mechanical-Chemical (THMC) behaviour, (3) Corrosion, (4)
Modelling, (5) Test methodology, and (6) Ageing management. At the end of each session a
panel discussion was organised.

All the participants are gratefully acknowledged for their high-quality contribution to the
workshop and to the proceedings. It is worth mentioning that it was one of the main successes
of NUCPERF 2009 to facilitate information exchange between all the involved stakeholders.

The quality and the success of the workshop were also linked to the important endeavour of
the local organizing committee who worked continuously for having every detail fixed for the
best possible hosting conditions of the participants of the workshop.

Valérie L'Hostis, Robert Gens and Christophe Gallé


Contents


Preface
Author(s): V. L'Hostis, R. Gens, C. Gallé
Pages: XV - XV

I. Session present and future expectations


1. Leaching of reinforced concrete vaults subjected to variable water content due to capillary suction created by the seasonal temperature changes
Author(s): P. Zuloaga, C. Andrade, M. Castellote
Pages: 3 - 11

2. Studies concerning the reinforcement corrosion of concrete vaults for intermediate-level radioactive waste disposal
Author(s): F.M. Schultz, E.A. Arva, G.S. Duffo
Pages: 13 - 21

3. Effect of corrosion on load-bearing capacity and flexural stiffness of reinforced concrete elements
Author(s): R. François, A. Castel, R. Zhang
Pages: 23 - 31

II. Session Corrosion


4. The passivity and corrosion resistance of carbon steel in simulated boom clay HLNW environments
Author(s): D.D. Macdonald, O. Azizi, A. Saleh
Pages: 35 - 44

5. Effect of irradiation on corrosion of carbon steel in alkaline media
Author(s): N.R. Smart, A.P. Rance, R.J. Winsley, P.A.H. Fennel, B. Reddy, R. Gens
Pages: 45 - 52

6. Corrosion of steel drums containing cemented ion exchange-resins
Author(s): S.B. Farina, F.M. Schulz, G.S. Duffo
Pages: 53 - 60

7. Investigations into the development of corrosion induced cracks in mortar
Author(s): S. Caré, Y. Berthaud, F. Ragueneau, V. L'Hostis, A. Millard
Pages: 61 - 69

8. Modelling of reinforcement corrosion: macro cells and time dependence
Author(s): J. Harnisch, J. Warkus, M. Raupach
Pages: 71 - 78

9. Impact of moisture paramaters on the chloride induced corrosion in concrete rebars
Author(s): S. Charles, S. Poyet, V. L'Hostis
Pages: 79 - 87

III. Session THMC behaviour


10. Hydrated phases in blended cementitious systems for nuclear infrastructure
Author(s): K.A. Snyder, P.E. Stutzman, J. Philip, D. Esh
Pages: 91 - 98

11. Low-pH concretes based on CAC for underground repositories of HLRW. Resistance respect to groundwater agression
Author(s): J.L. Garcia Calvo, A. Hidalgo, M.C. Alonso, L. Fernandez Luco
Pages: 99 - 108

12. Pore structure and transport properties of high-volume fly ash materials used for radioactive waste disposal facilities
Author(s): K. Kinomura, V. Baroghel-Bouny
Pages: 109 - 117

13. Effect of decalcification on the performance of carbon microfiber reinforced cement-based materials
Author(s): F. Sanchez, A. Borwankar, C. Ince
Pages: 119 - 124

14. Influence of pre-cracking over water desorption in cement pastes and mortars
Author(s): T. Rougelot, N. Burlion, F. Skoczylas
Pages: 125 - 133

15. An integrated model to predict the relations between electrical double layer properties and chloride ingress in cement-based materials
Author(s): Y. Elakneswaran, T. Nawa, K. Kurumisawa
Pages: 135 - 142

16. Effect of desaturation and temperature on concretes
Author(s): F. Brue, N. Burlion, F. Skoczylas, X. Bourbon, G. Camps
Pages: 143 - 150

IV. Session modelling


17. Concrete buffers for the containment of high-level radioactive waste: casting conditions and THM behaviour
Author(s): B. Craeye, G. De Schutter, H. Van humbeeck, W. Wacquier, A. Van cotthem
Pages: 153 - 166

18. Modelling the durability of concrete for nuclear waste disposal facilities
Author(s): O.P.J. Kari, J.A. Puttonen
Pages: 167 - 174

19. Application of an atmospheric corrosion model to the prediction of induced damage in reinforced concrete structures
Author(s): A. Millard, V. Leyre, V. L'Hostis
Pages: 175 - 183

20. The impact of mineral deposition by carbonation and dissolution on tortuosity for leaching of constituents from a cementitious waste form
Author(s): J. Arnold, J.C.L. Meeussen, A. Garrabrants, H. van der Sloot, D.S. Kosson
Pages: 185 - 192

21. A reactive transport model based on thermodynamic computations to estimate the atmospheric carbonation of cementitious materials
Author(s): E. Stora, C. Conrardy, R. Barbarulo, J. Chen, F. Thoué
Pages: 193 - 202

22. Correlations between measures and development of a predictive model for the long-term behavior of concrete structures subjected to leaching
Author(s): T. de Larrard, F. Benboudjema, J.B. Colliat, J.M. Torrenti, F. Deleruyelle
Pages: 203 - 210

V. Session tests methodology


23. Thick corrosion layers in reinforced concrete: characterization and properties - a review
Author(s): D. Neff, P. Dillmann, E. Burger, A. Demoulin, V. L'Hostis
Pages: 213 - 219

24. Estimation of degraded depth in decalcified cement mortars by simplified modeling and ultrasonic velocity measurements
Author(s): I. Segura, M. Molero, A. Moragues, J.J. Anaya, T. Sanchez
Pages: 221 - 228

25. Evaluation of long-term durability of concrete in contact with bentonite mixed with NaHCO3 by electrical migration technique
Author(s): K. Nakarai, M. Watanabe, K. Koibuchi
Pages: 229 - 235

26. A new analysis of the restrained ring shrinkage test
Author(s): M. Briffaut, F. Benboudjema, J.M. Torrenti, G. Nahas
Pages: 237 - 244

27. The long-term prediction of corrosion damage in nuclear waste containers
Author(s): P. Fennell
Pages: 245 - 253

28. analysis of steel concrete interface in presence of corrosion
Author(s): T.B. Hop, Y. Berthaud, F. Ragueneau, S. Caré
Pages: 255 - 263

29. Chloride transport within the bulk of hardened cementitious materials
Author(s): M. Castellote, C. Andrade, P. Zuloaga, M. Ordonez
Pages: 265 - 272

VI. Session aging management


30. Ageing management of CANDU concrete containment buildings
Author(s): K.E. Philipose, E. Frank
Pages: 275 - 285

31. Role of reactive vitreous coatings in reinforced concrete in nuclear plant construction
Author(s): C. Weiss, S.W. Morefield, P.G. Malone, M.L. Koenigstein
Pages: 287 - 294

32. Use of stainless steel reinforcement in the engineered barriers of LILW repository
Author(s): A. Legat, N. Cesen, N. Gartner, V. Kuhar, T. Kosec
Pages: 295 - 303

33. Service life of coating systems applied on cooling towers - A laboratory study and in-situ investigations
Author(s): T. Mozaryn, J. Kokowska
Pages: 305 - 312

34. Evaluation of carbonation-induced corrosion initiation for coastal concrete structure
Author(s): S.H. Han, W.S. Park
Pages: 313 - 320

35. BETOSCAN - A robotic system for simultaneous diagnoses of reinforced concrete structures
Author(s): K. Reichling, M. Raupach, H. Wiggenhauser, M. Stoppel, G. Dobmann, J. Kurz
Pages: 321 - 327

36. Informative results from a non-destructive corrosion survey of the soffit of an 80 cm thick post-tensioned bridge deck
Author(s): U. Schneck
Pages: 329 - 334

37. Online corrosion monitoring and cathodic protection of a steel structure in concrete
Author(s): M. Brem, M. Büchler, I. Mailand
Pages: 335 - 342