Experimental investigation on shear strengthening of RC continuous T-beams with different layer of CFRP schemes

Alfejani, Marwan (2014) Experimental investigation on shear strengthening of RC continuous T-beams with different layer of CFRP schemes. In: InCIEC 2014 International Civil and Infrastructure Engineering Conference, 28 September – 1 October 2014, Kota Kinabalu, Sabah, Malaysia.

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Abstract

Carbon fiber reinforced polymer (CFRP) is a material suitable for strengthening the reinforced concrete (RC) beams. Although many in situ RC beams are of continuous constructions, there has been very limited research on the behavior of such beams with externally applied FRP laminate. In addition, most design guidelines were developed for simply supported beams with external FRP laminates. This paper presents the results of a test program for shear strengthening characteristics of strips bidirectional flexible carbon-fiber polymer sheets bonded to reinforced concrete (RC) beams. A total of three 150x320x3650mm, flange width= 400mm and flange thickness = 120mm concrete beams were tested and various sheet configurations and layouts were studied to determine their effects on ultimate shear strength and shear capacity of the beams. From the test results, it was found that all schemes were found to be effective in enhancing the shear strength of RC beams. It was observed that the strength increases with the number of sheet layers provided the most effective strengthening for RC continuous T- beam. Beam strengthened using this scheme showed 23.1% increase in shear capacity as compared to the control beam. Two prediction models available in literature were used for computing the contribution of CFRP strips and compared with the experimental results.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:CFRP; continuous t-beam; shear strengthening
Subjects:T Technology > TA Engineering (General). Civil engineering (General) > TA401-492 Materials of engineering and construction. Mechanics of materials
ID Code:6172
Deposited By:Normajihan Abd. Rahman
Deposited On:10 Dec 2014 14:51
Last Modified:10 Dec 2014 14:51

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