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Service Life Estimation of Reinforced Concrete Structures Made Using CR-Bearing Rebars in Microcell Corrosion Environments

Title
Service Life Estimation of Reinforced Concrete Structures Made Using CR-Bearing Rebars in Microcell Corrosion Environments
Author
신성우
Keywords
Cr-bearing rebar; service life estimation; microcell corrosion
Issue Date
2007-07
Publisher
IRON STEEL INST JAPAN KEIDANREN KAIKAN
Citation
ISIJ INTERNATIONAL, v. 47, No. 9, Page. 1315-1323
Abstract
Reinforced concrete structures made using Cr-bearing rebars subject to microcell corrosion were assumed with the aim of developing Cr-bearing rebars having the required corrosion resistance in microcell corrosion environments. Their service lives were then estimated for each type of corrosion environment based on a microcell corrosion rate model, and requirements for Cr-bearing rebars to achieve a service life of over 100 years were calculated. As a result, the service lives of concrete structures reinforced with Crbearing rebars were found to increase as the Cr content increased in all types of corrosion environments. Also, Cr-bearing rebars with Cr contents of not less than 11 % and not less than 7% ensured service lives of over 100 years In harsh and moderate chloride attack zones, respectively. In carbonation zones, a Cr content of not less than 3 % was proven to provide corrosion resistance for over 100 years.
URI
https://www.jstage.jst.go.jp/article/isijinternational/47/9/47_9_1315/_article/-char/ja/http://repository.hanyang.ac.kr/handle/20.500.11754/106727
ISSN
0915-1559
DOI
10.2355/isijinternational.47.1315
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > ARCHITECTURE(건축학부) > Articles
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