Fatigue Behavior of Large-Scale Reinforced Concrete Beams Strengthened in Flexure with Fiber-Reinforced Polymer Laminates
| Autor: | Barbara G. Charalambidi, Athanasios I. Karabinis, Theodoros C. Rousakis |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Materials science
Scale (ratio) business.industry Mechanical Engineering 0211 other engineering and technologies 020101 civil engineering 02 engineering and technology Building and Construction Structural engineering Fibre-reinforced plastic Reinforced concrete 0201 civil engineering Shear (sheet metal) Transverse plane Mechanics of Materials 021105 building & construction Ceramics and Composites Composite material Reinforcement business Concrete cover Beam (structure) Civil and Structural Engineering |
| Zdroj: | Journal of Composites for Construction. 20 |
| ISSN: | 1943-5614 1090-0268 |
| Popis: | The aim of the present research is the experimental investigation of the response of carbon-fiber-reinforced polymer (CFRP) strengthened reinforced concrete (RC) beams of large scale under fatigue loading. Reinforced concrete beams were cast for this purpose, both with rectangular and T cross-sections, with web dimensions of 200×500 mm and 3,050 mm in length. Beams were strengthened in flexure with externally bonded CFRP laminate [externally bonded reinforcement (EBR)] or with CFRP laminates bonded into slits on the concrete cover surface [near-surface-mounted (NSM)]. Transverse CFRP sheets were placed on the shear spans of the beams to avoid fragile shear failure. All specimens were tested under fatigue loading, with load-unload cycles of 2 Hz frequency. Two different amplitudes of cycles were investigated. The different fatigue life and modes of failures are discussed. Beams subjected to the low loading range, simulating the service loads of a bridge beam, could sustain more than 2 million cycl... |
| Databáze: | OpenAIRE |
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