An experimental study on relationship between chloride content in mortar and passivity condition of embedded steel bar

H. Hamada, D. Yamamoto, Y. Sagawa, T. Ikeda

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

Abstract

In this study, properties related to corrosion of embedded steel in mortar, which contains chloride around threshold chloride content for steel corrosion, were discussed. Half-cell potential, polarization resistance and polarization curve of embedded steel were measured. Half-cell potential showed a linear relationship with chloride content in mortar. Polarization resistance and grade of passivity judged by polarization curve quickly decreased at the chloride content around 0.3 - 0.4% mass percent versus unit cement mass. This indicates that the destruction of passivity film on steel surface is occurred around this chloride level, which is believed presently to be threshold chloride content for steel corrosion initiation.

Original languageEnglish
Title of host publicationLife-Cycle of Structural Systems
Subtitle of host publicationDesign, Assessment, Maintenance and Management - Proceedings of the 4th International Symposium on Life-Cycle Civil Engineering, IALCCE 2014
EditorsHitoshi Furuta, Dan M. Frangopol, Mitsuyoshi Akiyama
PublisherCRC Press/Balkema
Pages1479-1484
Number of pages6
ISBN (Print)9781138001206
DOIs
Publication statusPublished - 2015
Event4th International Symposium on Life-Cycle Civil Engineering, IALCCE 2014 - Tokyo, Japan
Duration: Nov 16 2014Nov 19 2014

Publication series

NameLife-Cycle of Structural Systems: Design, Assessment, Maintenance and Management - Proceedings of the 4th International Symposium on Life-Cycle Civil Engineering, IALCCE 2014

Other

Other4th International Symposium on Life-Cycle Civil Engineering, IALCCE 2014
CountryJapan
CityTokyo
Period11/16/1411/19/14

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Safety, Risk, Reliability and Quality

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