Evaluation of Self-Compacting Concrete Columns Reinforced with Steel and FRP Bars with Different Strengthening Techniques
| Autor: | Mahmoud Kamal, Fouad Khairallah, Ahmed Hassan, Hala Mamdouh |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
business.industry 0211 other engineering and technologies 020101 civil engineering 02 engineering and technology Building and Construction Structural engineering Fibre-reinforced plastic Frp reinforcement 0201 civil engineering Compressive load Column (typography) Buckling 021105 building & construction Architecture Safety Risk Reliability and Quality Reinforcement Ductility business Spiral Civil and Structural Engineering |
| Zdroj: | Structures. 15:82-93 |
| ISSN: | 2352-0124 |
| DOI: | 10.1016/j.istruc.2018.06.003 |
| Popis: | This study evaluates the overall behaviour of self-compacting short concrete columns with different reinforcement types. Major parameters, including reinforcement-type, confinement techniques and the slenderness ratio of columns, are studied. The FRP tube and spiral stirrups with two different volumetric ratios are considered as strengthening techniques. The mode of failure, axial compressive load, load-displacement curve, stress-reinforcement bars strain curve, ultimate, ductility and effect of the slenderness ratio are the main results obtained to evaluate the different column behaviours. The slenderness ratios have the same effect on column capacity for the different strengthening techniques, which have approximately 5% and 10% for the slenderness ratios of 6 and 8, respectively. The column capacity in the case of steel bars reinforcement is higher than when using FRP bars by approximately 22% of the column capacity. In terms of the reliability of different international code equations for the results of the tested columns, using CAN/CSA and ACI codes, discrepancies were noted between the steel and FRP as the main reinforcement for different code results. The columns reinforced by steel bars exhibit strong agreement with the ACI and Canadian specifications on the contrary FRP reinforcement, when neglecting its effect in these code recommendations. |
| Databáze: | OpenAIRE |
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