Title: Deflection Behaviour of Concrete Beams Reinforced with Carbon FRP Composite Bars

Author(s): C. Kassem, E. El-Salakawy, and B. Benmokrane

Publication: Symposium Paper

Volume: 210

Issue:

Appears on pages(s): 173-190

Keywords: carbon fibers; concrete beams; deflection; flexure; FRP composite bars; reinforcement ratio

DOI: 10.14359/12578

Date: 4/1/2003

Abstract:
This paper presents the test results of 14 full-scale concrete beams. The beams were 3300 mm long with a rectangular cross-section of 200-mm width and 300-mm depth. Twelve beams were reinforced with carbon FRP composite bars and two reinforced with steel as control. Two newly developed types of CFRP bars with different surface textures were considered: the sand-coated ISOROD bars and the ribbed-deformed C-BAR. The beams were tested to failure in four-point bending over a clear span of 2750 mm. The results presented focus on the deflection behaviour of beams reinforced with CFRP bars, which have different bond, elasticity modulus, strain, and strength characteristics. The test results were compared to the predictions of some of the available models (ISIS-M03-01 design manual, ACI 440.1R-01 guidelines, and Razaqpur model). Based on the findings of the study, the validity of the design guidelines and the effectiveness of using the new CFRP bars as reinforcement for concrete beams were established.