期刊
CORROSION SCIENCE
卷 87, 期 -, 页码 199-210出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2014.06.032
关键词
Steel reinforced concrete; SEM; Rust; Interfaces
资金
- National Natural Science Foundation of China [51278460]
- Ministry of Education of China [NCET-12-0493]
This study investigated four types of concrete that had deteriorated by wet-dry cycles coupled with DC power. The thicknesses of the corrosion-filled paste, T-CP, and the corrosion layer, T-CL, were measured by SEM in backscattered electron mode. A sudden increase of T-CP near the inner crack is observed. As T-CL grows, T-CP develops gradually until T-CL reaches a certain value, afterwards T-CP remains nearly unchanged. Considering the inner cracks, which reflects the actual situation, k(T) and T-CP(max) in the T-CP-T-CL model grow with increase of recycled aggregates replacement; while the rule is contrary if excluding the inner cracks. (C) 2014 Elsevier Ltd. All rights reserved.
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