期刊
CONSTRUCTION AND BUILDING MATERIALS
卷 163, 期 -, 页码 508-517出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2017.12.125
关键词
Mill scale; Low-alloy steel; Corrosion resistance; Corrosion products; Steel-concrete interface; Backscattered electron images
资金
- National Natural Science Foundation of China [51678144]
- National Basic Research Program of China [2015CB655100]
- Natural Science Foundation of Jiangsu Province [BK20161420]
This study investigated the corrosion performance of reinforcing steels in concrete exposed to flowing 3.5 wt% NaCl solution for 4 years. Two kinds of steels were selected: low-carbon (LC) steel and low alloy (LA) steel with alloying element Cr. Both steels were prepared with two surface conditions: as received one (with mill scale) and pickled one (removal of the mill scale). The microstructure of the steel-concrete interface was observed to investigate the effect of steel type and surface condition on the corrosion pattern. The results reveal that the corrosion resistance and the corrosion pattern of steels were largely influenced by the feature of the mill scale. (C) 2017 Elsevier Ltd. All rights reserved.
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