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An Experimental Study on the Rupture Strain Estimation of Fiber Sheets Bonded to Reinforced Concrete Beams  

Kim, Seong-Do (경성대학교 건설환경공학부)
Hwang, Tea-Ill (경성대학교 대학원 건설환경공학부)
Publication Information
Journal of the Korea institute for structural maintenance and inspection / v.7, no.3, 2003 , pp. 157-165 More about this Journal
Abstract
The paper deals with the rupture strain estimation of fiber sheets. The experimental study involved tensile testing of 120 fiber sheet specimens and bending testing of 72 concrete beams strengthened with various types of fiber sheets(carbon, glass, and aramid fiber). Concrete beams have 3 types of reinforcement ratios. Rupture strains of fiber sheet specimens are determined by tensile tests to be a little less than the tensile failure strain by the catalog, independently on the number of fiber sheet layers. It is shown that the rupture strain of fiber sheet bonded to reinforced concrete beam is not constant, but decreases as the fiber sheet layer increases. Based on these results, the rupture fiber sheet strain is estimated.
Keywords
fiber sheets; strengthened RC beams; rupture strain estimation;
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