Title:
FRP Reinforcing Bars in Reinforced Concrete Members
Author(s):
Vicki L. Brown and Charles L. Bartholomew
Publication:
Materials Journal
Volume:
90
Issue:
1
Appears on pages(s):
34-39
Keywords:
beams (supports); bond (concrete to reinforcement); corrosion; reinforced concrete; reinforcing materials; Materials Research
DOI:
10.14359/4034
Date:
1/1/1993
Abstract:
Presents a preliminary experimental study on the behavior of concrete members reinforced with FRP (fiberglass reinforced plastic) reinforcing bars, in which both the bending capacity and bond strength of FRP-reinforced concrete specimens were tested. Flexural behavior was studied by testing 6 simply supported FRP-reinforced beams to failure under third-point loading, while bond strength was investigated by conducting 24 pullout tests. Experimental results for flexural strength indicated that the FRP-reinforced beams in many aspects behaved in the same manner as would be expected in beams reinforced with steel bars. In addition, strength design methods for steel- reinforced beams adequately predict the ultimate moment capacity of FRP- reinforced beams. However, the FRP-reinforced beams exhibited much larger deflections than would be expected in steel-reinforced beams, due to their lower elastic modulus. Finally, pullout test results appear to suggest that the FRP reinforcing bar-to-concrete bond is approximately two-thirds that of steel reinforcing bar-to-concrete strength.