Repair of Concrete Structures by Carbon Fiber Method

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Repair of Concrete Structures by Carbon Fiber Method. Asst. Prof Dr. Kittipoom Rodsin King Mongkuts University of Technology North Bangkok. What is FRP ?. Fiber reinforced polymer - PowerPoint PPT Presentation

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<p> PowerPoint</p> <p>Repair of Concrete Structures by Carbon Fiber MethodAsst. Prof Dr. Kittipoom RodsinKing Mongkuts University of Technology North Bangkok</p> <p>What is FRP ?Fiber reinforced polymer </p> <p> 3 1. (Carbon) CFRP2. (Aramid) AFRP3. (Glass) GFRP</p> <p> 1. 2. 3. CFRP</p> <p>ROD</p> <p>PLATE</p> <p>SHEET</p> <p>Strengthening Method</p> <p>Material Properties &amp; Design ConceptsStrainStress35000 ksc4000 kscDesign Stress Limit for CFRP(strain = 0.004) FRP</p> <p>.</p> <p> FRP1. FRP Sheet U2. Epoxy 3. FRP </p> <p> CFRP Design Guideline</p> <p>STEP 1 FRP STEP 2 FRP</p> <p>STEP 3 Debonding Strain</p> <p> (Dead Load Strain) </p> <p>1. FRP </p> <p>2. FRP Sheet U-Jacket</p> <p>U-Jacket</p> <p>Bonded two sides only</p> <p>Vertical and Inclined Stripe</p> <p>Continuous Sheet</p> <p> FRP ACI440 </p> <p>= 0.95 full wrapped</p> <p> = 0.85 U/2 sides- wrapped</p> <p> FRPEffective Strain ACI Effective Strain </p> <p>Full wrapped</p> <p>3/2 sides-wrapped </p> <p>3 sides2 sides</p> <p> - (Confinement) - - - CFRP </p> <p> : confinement FRP CFRP CFRP</p> <p> CFRP</p> <p> = 0.95 </p> <p>+</p> <p> = 0.95 </p> <p> /</p> <p>() </p> <p> NSM bar (near surface mounted) Effective when small beam width More installation skill is needed</p> <p> CFRP CFRP ACI440</p> <p> 1 7 34 32</p> <p> 34 34</p> <p> FE Program</p> <p> Rating Factor</p> <p> CFRP Rating Factor 1</p>

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