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- W2367142495 abstract "In view of the scarity of test data on large scale and quite heavily reinforced concrete girders strengthened with externally bonded laminate of fiber reinforced polymer,real-size experiments have been carried out by the authors on the behavior of RC beams strengthened in flexure by bonding CFRP sheet or plate.The influence of the way of treating concrete substrate,the level of pre-loading before strengthening and the type of CFRP laminate on flexural capacity and failure mode was investigated in this study.The tests show that reliable interfacial bond is achieved in beams with concrete surface roughened by picking.In contrast,delaminating happens in case of surface planning.If debonding failure is avoided,CFRP laminates have good strengthening effect with somewhat better results from CFRP sheet than the plate with same axial tensile stiffness.The flexural capacity declines as the pre-load increases.In comparison with small beams,large beams are subject to an excess of the maximum interfacial stresses over the bond strength and thus debonding failure.With the assumptions in the specification and in consideration of the preloads,the characteristic bending moment at concrete cracking,rebar yielding and ultimate crushing are calculated and the predictions are in rational agreement with the test results." @default.
- W2367142495 created "2016-06-24" @default.
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- W2367142495 date "2010-01-01" @default.
- W2367142495 modified "2023-09-23" @default.
- W2367142495 title "Experimental research on heavily reinforced concrete girders flexure-strengthened with externally bonded CFRP laminates" @default.
- W2367142495 hasPublicationYear "2010" @default.
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