Performance of Mechanically Fastened FRP Strengthened Concrete Beams in Flexure
| Autor: | Anthony J. Lamanna, Jeremy A. Martin |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
Materials science
business.product_category business.industry Mechanical Engineering Building and Construction Fiber-reinforced concrete Structural engineering Fibre-reinforced plastic Fastener Strength of materials law.invention Brittleness Flexural strength Mechanics of Materials law Ceramics and Composites Composite material business Beam (structure) Size effect on structural strength Civil and Structural Engineering |
| Zdroj: | Journal of Composites for Construction. 12:257-265 |
| ISSN: | 1943-5614 1090-0268 |
| Popis: | The use of adhesively bonded fiber-reinforced polymer (FRP) materials has become widely accepted for use in flexural strengthening applications; however, the method of attachment presents drawbacks in application. These include extensive time and labor investments, as well as a tendency of the system to fail in a brittle manner. This paper presents a study of a series of reinforced concrete beams each strengthened in flexure with an FRP strip attached with large diameter concrete screws. The concrete screws were arranged in a variety of patterns. The effect of fastener number and spacing, as well as the effect of fastener pattern on the behavior of the beam, was investigated through the use of two groups of specimens. The beams in each group were tested to failure to verify the behavior of the strengthening system. Measured behavior was then used to determine an analytical approach for prediction of load response behavior of mechanically fastened systems. It was found that the strengthening method investigated improved the flexural capacity of the specimens 12 to 39% with little or no loss in ductility. |
| Databáze: | OpenAIRE |
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