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

M. Tavakkolizadeh, H. Saadatmanesh

Research output: Contribution to journalArticlepeer-review

103 Scopus citations


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
Issue number4
StatePublished - Nov 2003


  • 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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