期刊
CORROSION SCIENCE
卷 52, 期 10, 页码 3168-3179出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2010.05.019
关键词
Steel; Reinforced concrete; Long term corrosion; Raman spectroscopy; mu XRD
资金
- French Ministry of Culture
- CEA
- EdF
- ANDRA through CEA
Corrosion patterns on samples taken on binder and rebars from two buildings, respectively, aged of 46 and 260 years old have been characterised by coupling different analytical methods at microscopic scale. Different corrosion patterns have been observed. The first one is constituted by the initial mill scale made of wustite, magnetite and hematite. The second one contains remains of this mill scale embedded in phases formed after aqueous corrosion: oxyhydroxides as goethite or lepidocrocite containing marblings of ferrihydrite, maghemite and magnetite. On the thicker and older layers, marblings were only constituted of magnetite and maghemite. It is proposed that the structural evolution of the pattern and their marbling is linked to wet/dry cycles and/or pH condition evolution during the corrosion processes. (C) 2010 Elsevier Ltd. All rights reserved.
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