Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Corrosion products of galvanized rebars embedded in chloride-contaminated concrete
Iron corrosion products of steel reinforcement result in staining, cracking, and spalling of concrete structures. These effects of corrosion require costly repairs and maintenance during the useful life of the structures. To prevent corrosion of important infrastructure projects, galvanized reinforcing steel occasionally is used. The performance of galvanized steel in chloride-contaminated concrete is attributed to the corrosion product from: zinc oxide (ZnO), which is less voluminous than iron corrosion products. However, zinc corrosion products detected on galvanized reinforcement are rather controversial. Some authors identified another compound: zinc hydroxychloride (Zn5[OH]8Cl2.H2O). This product occupies more space than ZnO and can induce cracking of the cover concrete. Other authors found zinc hydroxychloride and zinc hydroxyde (Zn[OH]2). In this work, ZnO and Zn5(OH)8Cl2.H2O were identified. Under some conditions (exposure time in aggressive environment and coating thickness) and after cracking of concrete cover, Zn(OH)2 also was found.
Corrosion products of galvanized rebars embedded in chloride-contaminated concrete
Iron corrosion products of steel reinforcement result in staining, cracking, and spalling of concrete structures. These effects of corrosion require costly repairs and maintenance during the useful life of the structures. To prevent corrosion of important infrastructure projects, galvanized reinforcing steel occasionally is used. The performance of galvanized steel in chloride-contaminated concrete is attributed to the corrosion product from: zinc oxide (ZnO), which is less voluminous than iron corrosion products. However, zinc corrosion products detected on galvanized reinforcement are rather controversial. Some authors identified another compound: zinc hydroxychloride (Zn5[OH]8Cl2.H2O). This product occupies more space than ZnO and can induce cracking of the cover concrete. Other authors found zinc hydroxychloride and zinc hydroxyde (Zn[OH]2). In this work, ZnO and Zn5(OH)8Cl2.H2O were identified. Under some conditions (exposure time in aggressive environment and coating thickness) and after cracking of concrete cover, Zn(OH)2 also was found.
Corrosion products of galvanized rebars embedded in chloride-contaminated concrete
Korrosionsprodukte von verzinktem Bewehrungsstahl in chloridhaltigem Beton
Belaid, F. (Autor:in) / Arliguie, G. (Autor:in) / Francois, R. (Autor:in)
Corrosion, Houston ; 56 ; 960-965
2000
6 Seiten, 10 Bilder, 4 Tabellen, 6 Quellen
Aufsatz (Zeitschrift)
Englisch
Corrosion Products of Galvanized Rebars Embedded in Chloride-Contaminated Concrete
| British Library Online Contents | 2000
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| British Library Online Contents | 2017
Corrosion protection of galvanized rebars in ternary binder concrete exposed to chloride penetration
| British Library Online Contents | 2017
Corrosion protection of galvanized rebars in ternary binder concrete exposed to chloride penetration
| Online Contents | 2017