FRPシートで曲げ補強したRC梁の曲げ付着特性に関する実験的研究

概要

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In the paper, in order to cumulate fundamental data for establishing a rational flexural strengthening method of RC structure with FRP (Fiber Reinforced Plastic) sheet, flexural bonding property of AFRP and/of CFRP sheets bonded on the bottom surface of RC beams is investigated by a static loading test. This study is composed of two series which are : 1) an experiment for finding a optimum treating method for the sheet bonded on concrete surface ; 2) an experiment for studying on the flexural bonding property when material and volume of FRP sheet are varied. The results obtained from these experiments are as follows ; 1) a heavy chipping treatment method is the most effective among four treatment ones, 2) the bigger the FRP density, the longer the required bonding length is, 3) the mean value of bonding strength for all the AFRP/CFRP sheets used here may be 0.7~0.8 MPa.