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| Naji, M. |
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| Motta, Antonella |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Petrov, R. H. | Madrid |
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| Kočí, Jan | Prague |
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| Azam, Siraj |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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Schnerch, David
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Topics
Publications (3/3 displayed)
- 2007Strengthening of steel-concrete composite bridges with high modulus carbon fiber reinforced polymer (CFRP) strips
- 2005Rectangular Filament-Wound Glass Fiber Reinforced Polymer Tubes Filled with Concrete under Flexural and Axial Loading: Experimental Investigation
- 2005Strengthening of Steel Structures with High Modulus Carbon Fiber Reinforced Polymer (CFRP) Materials
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document
Strengthening of steel-concrete composite bridges with high modulus carbon fiber reinforced polymer (CFRP) strips
Abstract
ABSTRACT: The deterioration of steel bridges is a severe problem that often results in restrictive load ratings, costly repairs of the steel structural elements, and early replacement of entire structures. Strengthening and rehabilitation of steel structural elements by bonding high modulus carbon fiber reinforced polymer (CFRP) laminates has been investigated for steel-concrete composite beams that are typical of those used for bridge structures. Two series of flexural tests have been conducted. Large-scale beams, spanning 6400 mm have been strengthened using carbon fiber with an elastic modulus of either 640 GPa or 440 GPa. One of these beams was strengthened using CFRP laminates that were prestressed prior to bonding. This system has shown the potential to increase the flexural stiffness of the beam more than an equivalent amount of unstressed laminate, while preserving its full ductility. The second series of five smaller beams, spanning 3050 mm, investigated in detail the strain distribution of the strengthened beams compared to an unstrengthened beam. The effect of overloading and subsequent unloading has also been examined.