Structural evaluation of full-scale FRP-confined reinforced concrete columns

Antonio De Luca, Fabio Nardone, Fabio Matta, Antonio Nanni, Gian Piero Lignola, Andrea Prota

Research output: Contribution to journalArticle

104 Scopus citations

Abstract

The external confinement of RC columns by means of externally bonded fiber-reinforced polymer (FRP) laminates is a well established technique for strengthening and retrofitting purposes. This paper presents a pilot research that includes laboratory testing of full-scale square and rectangular RC columns externally confined with glass and basalt-glass FRP laminates and subjected to pure axial load. Specimens that are representative of full-scale building columns were designed according to a dated American Concrete Institute (ACI) 318 code (i.e., prior to 1970) for gravity loads only. The study was conducted to investigate how the external confinement affects peak axial strength and deformation of a prismatic RC column. The results showed that the FRP confinement increases concrete axial strength, but it is more effective in enhancing concrete strain capacity. The discussion of the results includes a comparison with the values obtained using existing constitutive models.

Original languageEnglish (US)
Pages (from-to)112-123
Number of pages12
JournalJournal of Composites for Construction
Volume15
Issue number1
DOIs
StatePublished - Jan 1 2011

Keywords

  • Concrete columns
  • Confinement
  • Deformability
  • Deformation
  • Fiber reinforced polymer
  • FRP laminates
  • Full-scale RC columns
  • Laminated materials
  • Strain
  • Strengthening
  • Structural analysis
  • Volumetric strain

ASJC Scopus subject areas

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

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