Quantifying corrosion caused by extreme weathering between carbon fibre reinforced polymers (CFRP) and steel

Daniel Borrie, Nawshad Adnan, R. K. Singh Raman, Xiao Ling Zhao

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

Research into carbon fibre reinforced polymers (CFRP)'s application to steel as a retrofitting technique has shown very positive results for increasing mechanical properties. However, the limitation of these materials in a corrosion inducing environment has been widely overlooked. In this study, the possible interaction of CFRP and steel in extreme weather conditions in causing localized corrosion (e.g., pitting) was investigated, with the primary aim of quantifying the pit depth and density caused by the galvanic corrosion process between the two materials. Steel tiles patched in direct contact with different varieties of CFRP were exposed to 5% NaCl solutions at two temperatures for different durations. After removal, the pit depth and pit density were analysed to determine whether galvanic conditions could indeed generate pits, which are known to initiate fatigue cracks in steels. It was observed, in this initial work, that after 4 weeks of exposure to NaCl, the pits formed from the CFRP patched specimens were not exceedingly different or critical compared to that of the control steel tiles.

Original languageEnglish
Title of host publicationProceedings of the 4th Asia-Pacific Conference on FRP in Structures, APFIS 2013
EditorsScott T. Smith, Xiao-Ling Zhao, Yu Bai, Riadh Almahaidi
PublisherInternational Institute for FRP in Construction (IIFC)
ISBN (Electronic)9780987593016
Publication statusPublished - 2013
Externally publishedYes
Event4th Asia-Pacific Conference on FRP in Structures, APFIS 2013 - Melbourne, Australia
Duration: 11 Dec 201313 Dec 2013

Publication series

NameProceedings of the 4th Asia-Pacific Conference on FRP in Structures, APFIS 2013

Conference

Conference4th Asia-Pacific Conference on FRP in Structures, APFIS 2013
Country/TerritoryAustralia
CityMelbourne
Period11/12/1313/12/13

Keywords

  • CFRP
  • Extreme environments
  • Fibre reinforced polymer
  • Galvanic corrosion
  • Steel
  • Weathering

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Materials Science(all)

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