Flexural behavior of R/C beams strengthened with carbon fiber reinforced polymer sheets or fabric

P. Alagusundaramoorthy, I. E. Harik, C. C. Choo

Research output: Contribution to journalArticlepeer-review

90 Scopus citations

Abstract

Their resistance to electro-chemical corrosion, high strength-to-weight ratio, larger creep strain, fatigue resistance, and nonmagnetic and nonmetallic properties make carbon fiber reinforced polymer (CFRP) composites a viable alternative to bonding of steel plates in repair and rehabilitation of reinforced concrete structures. The objective of this investigation is to study the effectiveness of externally bonded CFRP sheets or carbon fiber fabric in increasing the flexural strength of concrete beams. Four-point bending flexural tests were conducted up to failure on nine concrete beams strengthened with different layouts of CFRP sheets and carbon fiber fabric and on three beams with different layouts of anchored CFRP sheets. An analytical procedure, based on compatibility of deformations and equilibrium of forces, was presented to predict the flexural behavior of beams strengthened with CFRP sheets and carbon fiber fabric. Comparisons were made between the test results and the analytical calculations. The flexural strength was increased up to 58% on concrete beams strengthened with anchored CFRP sheets.

Original languageEnglish
Pages (from-to)292-301
Number of pages10
JournalJournal of Composites for Construction
Volume7
Issue number4
DOIs
StatePublished - Nov 2003

Keywords

  • Beams
  • Bending
  • Concrete, reinforced
  • Fiber reinforced polymers
  • Sheets
  • Structural reinforcement

ASJC Scopus subject areas

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

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