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Evaluation of the short and long-term efficiencies of electro-chemical chloride extraction / G. E. Abdelaziz in Cement and concrete research, Vol. 39 N° 8 (Août 2009) 

Public ISBD [article]  in Cement and concrete research > Vol. 39 N° 8 (Août 2009) . - pp. 727–732 Titre : Evaluation of the short and long-term efficiencies of electro-chemical chloride extraction Type de document : texte imprimé Auteurs : G. E. Abdelaziz, Auteur ; A.M.K. Abdelalim, Auteur ; Y.A. Fawzy, Auteur Année de publication : 2009 Article en page(s) : pp. 727–732 Note générale : Génie Civil Langues : Anglais (eng) Mots-clés : Durability;  Corrosion;  Electro-chemical Résumé : The short and long-term effects of electro-chemical chloride extraction (ECE) treatment on corrosion rate of corroded reinforcement have been studied. The factors controlling ECE treatment were identified, and the alterations which occurred in the chloride profile of the cover zone due to ECE process were followed. Contaminated reinforced OPC and SRC mortar specimens made with 1 or 2% NaCl, by mass of cement, were prepared, cured and then subjected to 3 or 5% NaCl for one year. These specimens were finally treated with ECE using various impressed current densities (1 and 2 A/m2) and electrolytes (water and calcium hydroxide) for 2, 4 and 8 weeks. The state of corrosion was monitored regularly every 2 weeks from halting ECE process up to 52 weeks using zero-resistance ammeter device for measuring the corrosion current density of reinforcement. Selected samples from the cover zone of the untreated and treated specimens were finally taken to assess their chloride profiles. ISSN : 0008-8846 En ligne : http://www.sciencedirect.com/science/article/pii/S0008884609001264 [article] Evaluation of the short and long-term efficiencies of electro-chemical chloride extraction [texte imprimé] / G. E. Abdelaziz, Auteur ; A.M.K. Abdelalim, Auteur ; Y.A. Fawzy, Auteur . - 2009 . - pp. 727–732. Génie Civil Langues : Anglais (eng) in Cement and concrete research > Vol. 39 N° 8 (Août 2009) . - pp. 727–732 Mots-clés : Durability;  Corrosion;  Electro-chemical Résumé : The short and long-term effects of electro-chemical chloride extraction (ECE) treatment on corrosion rate of corroded reinforcement have been studied. The factors controlling ECE treatment were identified, and the alterations which occurred in the chloride profile of the cover zone due to ECE process were followed. Contaminated reinforced OPC and SRC mortar specimens made with 1 or 2% NaCl, by mass of cement, were prepared, cured and then subjected to 3 or 5% NaCl for one year. These specimens were finally treated with ECE using various impressed current densities (1 and 2 A/m2) and electrolytes (water and calcium hydroxide) for 2, 4 and 8 weeks. The state of corrosion was monitored regularly every 2 weeks from halting ECE process up to 52 weeks using zero-resistance ammeter device for measuring the corrosion current density of reinforcement. Selected samples from the cover zone of the untreated and treated specimens were finally taken to assess their chloride profiles. ISSN : 0008-8846 En ligne : http://www.sciencedirect.com/science/article/pii/S0008884609001264