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4. Passivation of reinforcement in sound concrete
4.1 Reinforcement before placing in concrete
Reinforcing bars leaving the factory are coated with a layer of adherent scale. They are then stored on site prior to installation and insertion into the concrete. They then oxidize, and the porous oxidation layer (figure 11 ) is penetrated during casting by the cement solution towards the metal surface, where passivation or corrosion reactions take place.
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Passivation of reinforcement in sound concrete
Effect of aggressive agents penetrating concrete
Bibliography
Events
Show: Batimat Reed Expositions, the international construction show, takes place every two years in Paris (odd-numbered years). http://www.batimat.com
European Corrosion Federation Congress: EUROCOR (session: Corrosion of steel in concrete)
Le Pont" symposium organized by Association Le Pont and AFGC
...Standards and norms
- Béton, spécification, performances, production et conformité - NF EN 206-1 - 2014
- Cement – Part 1: composition, specifications and conformity criteria for common cements (classification index: P15-101-1) - NF EN 197-1 - 2001
- Cement – Part 2: conformity assessment (classification index: P15-101-2) - NF EN 197-2 - 2001
- Corrosion of metals and alloys – Key terms and definitions - ISO 8044 - 1999
Directory
Center français de l'anticorrosion (CEFRACOR), Construction-Building Commission http://www.cefracor.org
Organisme professionnel de prévention du bâtiment et des travaux publics (OPPBT) (Professional organization for building and public works prevention) http://www.oppbt.fr
...
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