Threshold chloride concentration for stainless steels activation in concrete pore solutions / Milan Kouřil in Cement and concrete research, Vol. 40 N° 3 (Mars 2010)  

Public ISBD [article]  inCement and concrete research > Vol. 40 N° 3 (Mars 2010) . - pp. 431–436 Titre : Threshold chloride concentration for stainless steels activation in concrete pore solutions Type de document : texte imprimé Auteurs : Milan Kouřil, Auteur Année de publication : 2012 Article en page(s) : pp. 431–436 Note générale : Bibliogr. Langues : Anglais (eng) Mots-clés : Stainless steel  Corrosion  Reinforcement  Chloride Résumé : The threshold chloride concentration for stainless steels activation in concrete environments depends not only on chemical composition of the steel and on pH level of concrete pore solution but is also considerably affected by the superficial state of the steel. The presence of scales leads to significant decrease of corrosion resistance. This study evaluates the corrosion resistance of various stainless steels exposed to pore solutions of fresh concrete by means of electrochemical methods. All tested materials with bare surface, except for martensitic chromium steel FeCr12, proved to be completely resistant to fresh concrete pore solution containing chlorides. If the surface is scaled, the identically high resistance cannot be expected even for the most alloyed stainless steels. En ligne : http://www.sciencedirect.com/science/article/pii/S0008884609003366 [article] Threshold chloride concentration for stainless steels activation in concrete pore solutions [texte imprimé] / Milan Kouřil, Auteur . - 2012 . - pp. 431–436. Bibliogr. Langues : Anglais (eng) in Cement and concrete research > Vol. 40 N° 3 (Mars 2010) . - pp. 431–436 Mots-clés : Stainless steel  Corrosion  Reinforcement  Chloride Résumé : The threshold chloride concentration for stainless steels activation in concrete environments depends not only on chemical composition of the steel and on pH level of concrete pore solution but is also considerably affected by the superficial state of the steel. The presence of scales leads to significant decrease of corrosion resistance. This study evaluates the corrosion resistance of various stainless steels exposed to pore solutions of fresh concrete by means of electrochemical methods. All tested materials with bare surface, except for martensitic chromium steel FeCr12, proved to be completely resistant to fresh concrete pore solution containing chlorides. If the surface is scaled, the identically high resistance cannot be expected even for the most alloyed stainless steels. En ligne : http://www.sciencedirect.com/science/article/pii/S0008884609003366

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