Repair of damaged steel-concrete composite girders using carbon fiber-reinforced polymer sheets

M. Tavakkolizadeh, H. Saadatmanesh

Research output: Contribution to journalArticle

87 Scopus citations

Abstract

The aging infrastructure of the United States requires significant attention for developing new materials and techniques to effectively and economically revive this aging system. Damaged steel-concrete composite girders can be repaired and retrofitted by epoxy bonding carbon fiber-reinforced polymer (CFRP) laminates to the critical areas of tension flanges. This paper presents the results of a study on the behavior of damaged steel-concrete composite girders repaired with CFRP sheets under static loading. A total of three large-scale composite girders made of W355×13.6 A36 steel sections and 75-mm-thick by 910-mm-wide concrete slabs were prepared and tested. One, three, and five layers of CFRP sheet were used to repair the specimen with 25, 50, and 100% loss of the cross-sectional area of their tension flange, respectively. The test results showed that epoxy bonded CFRP sheet could restore the ultimate load-carrying capacity and stiffness of damaged steel-concrete composite girders. Comparison of the experimental and analytical results revealed that the traditional methods of analysis of composite beams were conservative.

Original languageEnglish (US)
Pages (from-to)311-322
Number of pages12
JournalJournal of Composites for Construction
Volume7
Issue number4
DOIs
StatePublished - Nov 1 2003

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Keywords

  • Carbon
  • Concrete
  • Fiber reinforced polymers
  • Girders
  • Rehabilitation
  • Sheets
  • Steel

ASJC Scopus subject areas

  • Ceramics and Composites
  • Civil and Structural Engineering
  • Building and Construction
  • Mechanics of Materials
  • Mechanical Engineering

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