Flexural strengthening of reinforced concrete beams with carbon fiber sheets

Yoshihiro Takahashi, Chihiro Hata, Yasuhiko Sato, Tamon Ueda, Toshiya Maeda

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The simple-supported concrete beams reinforced with aramid FRP (AFRP) rods and carbon FRP (CFRP) sheets were tested to failure using a symmetric two-point concentrated static loading system. AFRP rods were used instead of steel reinforcing bars, and CFRP sheets were epoxy bonded to the tension face of the concrete beams to enhance their flexural strength. Moreover, a 5-cm wide strip of CFRP sheet in some places were wrapped around the web (hereafter, called "U· jacket") after the CFRP sheets were bonded. The strain distributions on AFRP rods and CFRP sheets, and flexural behavior of the beams with AFRP rods and CFRP sheets were examined experimentally. The results showed that; 1) peeling of CFRP sheets occurred near the maximum flexural moment region, 2) ultimate load and deflection of the beam with U-jackets were higher, and 3) the U-jacket was a significant factor affecting the ductile behavior of beams with CFRP sheets.

Original languageEnglish
Title of host publication4th International Symposium - Fiber Reinforced Polymer Reinforcement for Reinforced Concrete Structures
EditorsCharles W. Dolan, Sami H. Rizkalla, Antonio Nanni
PublisherAmerican Concrete Institute
Pages711-724
Number of pages14
ISBN (Electronic)9780870316876
Publication statusPublished - 1999 Aug 1
Externally publishedYes
Event4th International Symposium on Fiber Reinforced Polymer Reinforcement for Reinforced Concrete Structures - Baltimore, United States
Duration: 1999 Oct 311999 Nov 5

Publication series

NameAmerican Concrete Institute, ACI Special Publication
VolumeSP-188
ISSN (Print)0193-2527

Conference

Conference4th International Symposium on Fiber Reinforced Polymer Reinforcement for Reinforced Concrete Structures
Country/TerritoryUnited States
CityBaltimore
Period99/10/3199/11/5

Keywords

  • Aramid
  • Carbon
  • Fiber reinforced polymers
  • Flexural reinforcement
  • Rod
  • U-jacket

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science(all)

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