Several factors affecting the anodic polarization curve of steel bars embedded in mortar

H. Hamada, Y. Sagawa, T. Ikeda, R. Morikawa

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

Anodic polarization curve is measured to evaluate the condition of passivated film on steel surface. Normally, polarization curve can be adapted only to "specimen" immersed in aqueous solution in laboratory. Furthermore, a set of measurement takes about 40 minutes. It makes difficult to apply this measurement for actual structures. If these difficulties could be overcome, polarization curve measurement can be used on site to evaluate the condition of paasivated film on steel surface in concrete. In this study, at first, a new measuring method with new sensor system, which makes it possible to apply it to actual structures, was developed. And, several factors were tested to evaluate their effects on polarization curve. Finally, several conclusions could be obtained. (1) Polarization curve obtained with new sensor system is almost equal to it with ordinary system. (2) Polarization speed affects on polarization curve, as that the current flow is increased with high polarization speed. (3) With new sensor system, polarization curve measurement can be adopted to actual structures on site.

Original languageEnglish
Title of host publicationConcrete under Severe Conditions
Subtitle of host publicationEnvironment and Loading - Proceedings of the 6th International Conference on Concrete under Severe Conditions, CONSEC'10
PublisherCRC Press
Pages201-208
Number of pages8
ISBN (Print)9780415593175
DOIs
Publication statusPublished - 2010
Event6th International Conference on Concrete under Severe Conditions-Environment and Loading, CONSEC'10 - Merida, Yucatan, Mexico
Duration: Jun 7 2010Jun 9 2010

Publication series

NameConcrete under Severe Conditions: Environment and Loading - Proceedings of the 6th International Conference on Concrete under Severe Conditions, CONSEC'10
Volume1

Other

Other6th International Conference on Concrete under Severe Conditions-Environment and Loading, CONSEC'10
CountryMexico
CityMerida, Yucatan
Period6/7/106/9/10

All Science Journal Classification (ASJC) codes

  • Building and Construction

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