Abstract
Bond Performance of Sanded Surface and Threaded Smooth Gfrp Bars
Highlights
Steel Reinforcement corrosion has been reported to be a major contributor in the deterioration of concrete structures
Specimens were tested according to ACI 440.3R-12 test method for bond strength of FRP bars by pullout testing [6]
For the sanded surface bars, metal sleeves were glued to the loaded end of the bar to allow for the machine clamps to grip on the bar
Summary
Steel Reinforcement corrosion has been reported to be a major contributor in the deterioration of concrete structures. Several pullout tests have been done to evaluate bond strength of FRP bars which is a major factor in estimating development length [3,4,5]. The ACI 440.1R-15 [3] defines development length as the embedment in concrete required to transfer the force in the bar through bond (equation 10.1a). The used GFRP bars in this study had a guaranteed tensile strength (mean tensile strength of test specimens minus three times standard deviation [3] of 121 ksi (834 MPa).
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