DEFLECTION AND CRACK WIDTH PREDICTIONS OF CONCRETE BEAMS REINFORCED WITH FIBER REINFORCED POLYMER BARS

Current design methods for predicting deflections and crack widths at service load in concrete structures reinforced with steel bars may not be necessarily applicable in those reinforced with fiber reinforced polymer (FRP) bars. In this paper, methods for predicting deflections and crack widths and spacing of glass fiber reinforced polymer (GFRP) reinforced concrete beams were proposed. In order to use the effective moment of inertia for concrete beams reinforced with FRP bars, the effect of reinforcement ratios and elastic modulus of the FRP reinforcement were incorporated in Branson's equation. This paper also presents a new equation to predict crack width. Six concrete beams reinforced with different GFRP reinforcement ratios were tested. Deflections and crack widths were measured and compared with those obtained by proposed models. The comparison between the experimental results and those predicted was in good agreement.

• Corporate Authors:

  American Concrete Institute (ACI)

  38800 Country Club Drive
  Farmington Hills, MI  United States  48331
• Authors:
  • Toutanji, H A
  • Saafi, M
• Conference:
  • Fourth International Symposium on Fiber Reinforced Polymer Reinforcement for Reinforced Concrete Structures
  • Location: Baltimore, MD
  • Date: 1999-10-31 to 1999-11-5
• Publication Date: 1999

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: 12p

Subject/Index Terms

• TRT Terms: Beams; Concrete; Cracking; Deflection; Fiber reinforced materials; Flexure; Polymers; Reinforced concrete
• Subject Areas: Highways; Materials; I32: Concrete;

Filing Info

• Accession Number: 00782486
• Record Type: Publication
• Report/Paper Numbers: SP-188-86
• Files: TRIS
• Created Date: Jan 19 2000 12:00AM