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http://dx.doi.org/10.4334/JKCI.2006.18.3.439

Applicability of Hyblid FRP Reinforcing Bar for Self-diagnosis of Concrete Fracture  

Park, Seok-Kyun (Dept. of Civil Engineering, Daejeon University)
Kim, Dae-Hoon (Dept. of Civil Engineering, Daejeon University)
Publication Information
Journal of the Korea Concrete Institute / v.18, no.3, 2006 , pp. 439-445 More about this Journal
Abstract
For investigating self-diagnosis applicability, a method based on monitoring the changes in the electrical resistance of hybrid FRP(having electrical property) reinforced concrete has been tested. Then after examining change in the value of electrical resistance of carbon fiber in CFRP(non-hybrid type), CFGFRP and CFAFRP(hybrid type) before and after the occurrence of cracks and fracture in non-hybrid and hybrid FRP reinforced concrete at each flexural weight-stage, the correlations of each factors(the changes in electrical resistance and load as a function of strain, deflection) were analyzed. As the results, it is clarified that when the carbon fiber tows fracture, the electrical resistance of it increase largely, and afterwards hybrid FRP composites can be resist the load due to the presence of the reinforced fiber, for example, glass fiber or aramid fiber tows. Therefore, it can be recognized that hybrid FRP(including carbon fiber) reinforcing bar could be applied for self-diagnosis of fracture in reinforced FRP concrete fracture.
Keywords
hybrid FRP; CFRP; CFGFRP; AFGFRP; self-diagnosis;
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1 武藤範雄, 柳田博明, 杉田稔 外, CFGFRP複合材料と CFGFRP筋コンクリ-トの 破壊自己診斷, 日本窯業學會紙, Vol.100, No.12, 1992, pp.1429-1434
2 武藤範雄, 柳田博明, 杉田稔, コンクリ-ト損傷に對する自己診断, セメント.コンクリ-ト論文集, No.47. 1993, pp.82-831
3 武藤範雄, 柳田博明, 杉田稔, CFGFRP筋によるコンクリ-ト構造材の破壊検知, セメント.コンクリ-ト論文集, No. 48
4 武藤範雄, 柳田博明, 杉田稔(1995), 炭素.ガラス 複合繊維 補強筋 コンクリ-トに おける損傷の自己診断,セメント.コ ンクリ-ト論文集, No.576, 1994
5 杉田, スマートコンポジット-VI, 日本複合材料學會誌, Vol.23, No.5, 1997
6 N.Muto, H.Yanagida, T.Nakatsuji, M.Sugita, Y.Ohtsuka, Y.Arai and C.Saito, Materials design of CFGFRP-reiriforced concretes with diagnosing function for preventing fatal fracture, Advanced Composite Materials, Vol.4, No.4, 1995
7 K. Schulte and C. Baron, Composites Science & Technology, No.36, 1989, pp.63-76
8 박찬기, 콘크리트 보강용 고연성 하이브리드 FRP 보강근의 설계 및 적용, 박사학위논문, 건국대학교, 2004