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4. Steel corrosion-inducing phenomena in concrete: carbonation and chloride penetration
Reinforcement corrosion in reinforced concrete structures is induced by two distinct phenomena:
carbonation of concrete, by penetration of a CO 2 front from the surface to the core of the concrete ;
chloride ion penetration for structures in marine environments (submerged, in tidal zones, subject to splashing or spray), or exposed to de-icing salts in environments at risk of freezing (direct contact, splashing, run-off, etc.).
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Steel corrosion-inducing phenomena in concrete: carbonation and chloride penetration
Estimated service life of reinforced concrete structures vs. reinforcement corrosion
Bibliography
Standards and norms
- Standard Test Method for half-cell potentials of uncoated reinforcing steel concrete, ASTM Standard, section 4, vol. 04.02, Cement and Aggregates. - ASTM C876-91 - 1999
- European standard: concrete – Part 1: Specifications, performance, production and conformity, AFNOR, et Dispositions Nationales. - EN 206-1 - jan. 2000
- Norme Européenne : Eurocode 2 : Calcul des structures en béton et Document d'application...
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