Ten-year results of galvanic sacrificial anodes in steel reinforced concrete / G. Sergi in Materials and corrosion, Vol. 62 N° 2 (Fevrier 2011)  

Public ISBD [article]  inMaterials and corrosion > Vol. 62 N° 2 (Fevrier 2011) . - pp. 98–104 Titre : Ten-year results of galvanic sacrificial anodes in steel reinforced concrete Type de document : texte imprimé Auteurs : G. Sergi, Auteur Année de publication : 2011 Article en page(s) : pp. 98–104 Note générale : Génie Mécanique Langues : Anglais (eng) Mots-clés : Cathodic prevention Concrete durability Galvanic anodes Steel corrosion Index. décimale : 620.1 Essais des matériaux. Défauts des matériaux. Protection des matériaux Résumé : Zinc sacrificial anodes have been included in patch repairs to steel reinforced concrete structural elements suffering from corrosion since the mid-1990s. A number of these anode-containing repairs have been monitored with time. One of the first monitored sites was of a locally repaired cross beam of a bridge structure in Leicester, UK, which has now completed 10 years since its original repair and anode installation. This paper reviews the performance of the anodes installed at the Leicester site in terms of anode current output and steel reinforcement polarisation and corrosion rate over the period. It also presents results of analysis of recovered anodes exposed for 10 years which still show electrolyte continuity, uniform consumption of the zinc and coherent encasing mortar. The knowledge gained from the 10 year results has enabled the development of new, higher current output anodes, which are now trialled in this and other sites. DEWEY : 620.1 ISSN : 0947-5117 En ligne : http://onlinelibrary.wiley.com/doi/10.1002/maco.201005707/abstract [article] Ten-year results of galvanic sacrificial anodes in steel reinforced concrete [texte imprimé] / G. Sergi, Auteur . - 2011 . - pp. 98–104. Génie Mécanique Langues : Anglais (eng) in Materials and corrosion > Vol. 62 N° 2 (Fevrier 2011) . - pp. 98–104 Mots-clés : Cathodic prevention Concrete durability Galvanic anodes Steel corrosion Index. décimale : 620.1 Essais des matériaux. Défauts des matériaux. Protection des matériaux Résumé : Zinc sacrificial anodes have been included in patch repairs to steel reinforced concrete structural elements suffering from corrosion since the mid-1990s. A number of these anode-containing repairs have been monitored with time. One of the first monitored sites was of a locally repaired cross beam of a bridge structure in Leicester, UK, which has now completed 10 years since its original repair and anode installation. This paper reviews the performance of the anodes installed at the Leicester site in terms of anode current output and steel reinforcement polarisation and corrosion rate over the period. It also presents results of analysis of recovered anodes exposed for 10 years which still show electrolyte continuity, uniform consumption of the zinc and coherent encasing mortar. The knowledge gained from the 10 year results has enabled the development of new, higher current output anodes, which are now trialled in this and other sites. DEWEY : 620.1 ISSN : 0947-5117 En ligne : http://onlinelibrary.wiley.com/doi/10.1002/maco.201005707/abstract

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