Experimental investigation of FRP-strengthened RC beam-column joints

Costas P. Antonopoulos, Thanasis C. Triantafillou

Research output: Contribution to journalArticlepeer-review


The results of a comprehensive experimental program, aimed at providing a fundamental understanding of the behavior of shear-critical exterior reinforced concrete (RC) joints strengthened with fiber reinforced polymers (FRP) under simulated seismic load, are presented in this study. The role of various parameters on the effectiveness of FRP is examined through 2/3-scale testing of 18 exterior RC joints. Conclusions are drawn on the basis of certain load versus imposed displacement response characteristics, comprising the strength (maximum lateral load), the stiffness, and the cumulative energy dissipation capacity. The results demonstrate the important role of mechanical anchorages in limiting premature debonding, and they provide important information on the role of various parameters, including: area fraction of FRP; distribution of FRP between the beam and the column; column axial load; internal joint (steel) reinforcement; initial damage; carbon versus glass fibers; sheets versus strips; and effect of transverse beams.

Original languageEnglish (US)
Pages (from-to)39-49
Number of pages11
JournalJournal of Composites for Construction
Issue number1
StatePublished - Feb 2003


  • Beam columns
  • Concrete, reinforced
  • Fiber reinforced polymers
  • Joints

ASJC Scopus subject areas

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


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