2011 | OriginalPaper | Buchkapitel
Experimental Study of Concrete Beams Strengthened with CFRP Sheets under Simulated Vehicles Loads
verfasst von : Wenwei Wang, Guofan Zhao, Chengkui Huang
Erschienen in: Advances in FRP Composites in Civil Engineering
Verlag: Springer Berlin Heidelberg
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Five reinforced concrete (RC) beams with epoxy-bonded carbon fiber reinforced polymer (CFRP) sheets were loaded symmetrically with sinusoidal dynamic loads simulating vehicles loads. One sustained loaded RC beam strengthened with externally bonded CFRP sheets and two control RC beams were experimentally investigated. Variables considered in this experimental program included compressive strength of the concrete, reinforcement ratio, bonded length, and load range. The experimental program included two parts: dynamic test and static test. Application of CFRP sheets to the bottom of five RC beams was conducted under dynamic loads and then the static test began after 174,000 dynamic cycles. The results demonstrate the feasibility of rehabilitating and strengthening damaged RC beams with CFRP sheets while the beams are under simulating vehicles loads. The static test program shows that the application of CFRP to RC beams results in increased strength and enhanced performance.