Ductility of Concrete Beams Reinforced with FRP Rebars
| Autor: | Tomislav Kišiček, Tvrtko Renić |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Building construction
Materials science Concrete beams Bending (metalworking) reinforced concrete FRP rebars ductility confined compressive area business.industry Tension (physics) Building and Construction Structural engineering Fibre-reinforced plastic Durability Architecture Ultimate tensile strength business Reinforcement Ductility TH1-9745 Civil and Structural Engineering |
| Zdroj: | Buildings, Vol 11, Iss 424, p 424 (2021) Buildings Volume 11 Issue 9 |
| ISSN: | 2075-5309 |
| Popis: | Concrete beams reinforced with FRP rebars have greater durability than standard steel reinforced elements. The main disadvantage of using FRP rebars is the low ductility of elements which may be unacceptable in certain situations. There are several different ways of increasing the ductility of concrete elements, which are analyzed in this paper. They are compared based on efficiency, influence on durability and ease of construction. Less analyzed and tested methods are given more attention to try and expand the current knowledge and possibilities. For methods that lack experimental data, theoretical analysis is undertaken to assess the possible influence of that method on the increase in ductility. Ductility was obtained by calculating bending moment–curvature diagrams of cross sections for different reinforcement layouts. One method that lacks experimental data is confining the compressive area of beams with tensile FRP reinforcement. Theoretical analysis showed that confining the compressive area of concrete can significantly increase the ductility and bending capacity of beams. Since experimental data of beams reinforced with FRP rebars in tension and confined compressive area is sparse, some suggestions on the possible test setups are given to validate this theoretical analysis. Concrete beams reinforced with FRP can be detailed in such a way that they have sufficient ductility, but additional experimental research is needed. |
| Databáze: | OpenAIRE |
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