Corrosion Resistance of Cr-bearing Rebar in Concrete with Chloride Ion Content
- Authors
- TAE,Sung-Ho; Lee, Han Seung; NOGUCHI,Takafumi; UJIRO, Takumi; SHIN,Sung-Woo
- Issue Date
- Jul-2007
- Publisher
- Nippon Tekko Kyokai/Iron and Steel Institute of Japan
- Keywords
- Cr-bearing rebar; corrosion resistance; chloride ion; half-cell potential; corrosion area; weight loss; average corrosion rate
- Citation
- ISIJ International, v.46, no.7, pp.1075 - 1080
- Indexed
- SCIE
SCOPUS
- Journal Title
- ISIJ International
- Volume
- 46
- Number
- 7
- Start Page
- 1075
- End Page
- 1080
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/43560
- DOI
- 10.2355/isijinternational.46.1075
- ISSN
- 0915-1559
- Abstract
- As a fundamental study on the performance of Cr-bearing rebars in steel reinforced concrete structures exposed to corrosive environments, The test specimens were made by installing 8 types of rebars in concretes with a chloride ion content of 0.3, 0.6, 1.2, 2.4 and 24 kg/m(3). Corrosion accelerated curing were then conducted with them. The corrosion resistance of Cr-bearing rebars was examined by measuring crack widths, half-cell potential, corrosion area and weight loss after 155 cycles of corrosion-accelerating curing. The results of the study showed that the corrosion resistance increased as the Cr content increased regardless of the content of chloride ions, and that the Cr-bearing rebars with a Cr content of 5% and 9% showed high corrosion resistance in concretes with a chloride ion content of 1.2 and 2.4 kg/m(3), respectively.
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