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http://dx.doi.org/10.12652/Ksce.2011.31.4A.279

An Experimental Study on Bond Characteristics of FRP Reinforcements with Various Surface-type  

Jung, Woo Tai (한국건설기술연구원 구조교량연구실)
Park, Young Hwan (한국건설기술연구원 구조교량연구실)
Park, Jong Sup (한국건설기술연구원 구조교량연구실)
Publication Information
KSCE Journal of Civil and Environmental Engineering Research / v.31, no.4A, 2011 , pp. 279-286 More about this Journal
Abstract
FRP (Fiber Reinforced Polymer) tendons can be used as an alternative to solve the corrosion problem of steel tendons. Material properties of FRP tendons-bond strength, transfer length, development length-must be determined in order to apply to concrete structures. First of all, in case of application for pretension concrete members with CFRP tendons, transfer length is an important characteristic. The bond of the material characteristics should be demanded clearly to apply to PSC structures prestressed with FRP tendons. This paper investigated on the bond characteristics of FRP reinforcements with various surface-type. To determine the bond characteristics of FRP materials used in place of steel reinforcement or prestressing tendon in concrete, pull-out testing suggested by CAN/CSA S806-02 was performed. A total of 40 specimens were made of concrete cube with steel strands, deformed steel bar and 6 different surface shape FRP materials like carbon or E-glass. Results of the bonding tests presented that each specimen showed various behaviors as the bond stress-slip curve and compared with the bond characteristic of CFRP tendon developed in Korea.
Keywords
fiber reinforcement polymer; bond characteristic; bond strength; frp tendon;
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  • Reference
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