Flexural strengthening of reinforced concrete beams by mechanically attaching fiber-reinforced polymer strips

Anthony Lamanna, Lawrence C. Bank, David W. Scott

Research output: Contribution to journalArticle

77 Scopus citations

Abstract

The current method of bonding fiber-reinforced polymer (FRP) strengthening strips to concrete structures requires extensive time and semiskilled labor. An alternative method is to use a commercial off-the-shelf powder-actuated fastening system to attach FRP strips to concrete. A series of flexural tests were conducted on 15 304.8×304.8×3,657.6 mm (12×12×144 in.) reinforced concrete beams. Two beams were tested unstrengthened, 12 were strengthened with mechanically fastened FRP strips, and one was strengthened with a bonded FRP strip. The effects of three different strip moduli, different fastener lengths and layouts, and predrilling were examined. Three of the beams strengthened with mechanically attached FRP strips showed strengthening comparable to the beam strengthened with a bonded FRP strip. The same three beams strengthened with mechanically attached FRP strips also showed a greater ductility than the beam strengthened with a bonded FRP strip.

Original languageEnglish (US)
Pages (from-to)203-210
Number of pages8
JournalJournal of Composites for Construction
Volume8
Issue number3
DOIs
StatePublished - May 1 2004
Externally publishedYes

    Fingerprint

Keywords

  • Beams
  • Concrete, reinforced
  • Fiber reinforced polymers
  • Flexural strength

ASJC Scopus subject areas

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

Cite this