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Experimental Study about Flexural Strengthening Effects According to evelopment Method of Carbon Fiber Sheet for Reinforced Concrete Beam  

Won, Chi-Moon (한라대학교 토목공학과)
Publication Information
Journal of the Korea institute for structural maintenance and inspection / v.10, no.4, 2006 , pp. 119-126 More about this Journal
Abstract
This paper presents the results of a test program for flexural strengthening characteristics of continuous unidirectional carbon-fiber sheets bonded or/and developed to reinforced concrete (RC) beams. A total of six $150mm{\times}250mm{\times}2000mm$ concrete beams were tested. Various sheet development locations were studied to determine their effects on the ultimate flexural strength of the beams. From the test, it was found that the strength increases remarkably with the development of sheets at shear bar. Among the various location, multi-developed sheet provided the most effective strengthening for concrete beam. Beam strengthened using this scheme showed 53% increase in flexural capacity as compared to the control beam without any strengthening.
Keywords
Strengthening; Carbon-fiber sheet; Development; Bonding;
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