Concrete Columns Reinforced Longitudinally and Transversally with Glass Fiber-Reinforced Polymer Bars
Concrete Columns Reinforced Longitudinally and Transversally with Glass Fiber-Reinforced Polymer Bars
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DOI：
10.14359/51683874
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发表时间：
2012-07
影响因子：
1.8
通讯作者：
Hany Tobbi;A. Farghaly;B. Benmokrane
中科院分区：
文献类型：
--
作者：
Hany Tobbi;A. Farghaly;B. Benmokrane
The use of glass fiber-reinforced polymer (GFRP) reinforcing bars is being widely investigated as an alterative to conventional steel reinforcement in reinforced concrete (RC) structures exposed to harsh environments. This experimental study investigates the behavior of concrete columns reinforced with GFRP bars under axial loads. The effect of FRP bars as longitudinal and lateral reinforcement on the concrete column response is estimated, focusing primarily on the strength and strain capacities of RC members. Tie spacing, tie configuration and spalling of concrete cover were considered. The experimental results also were compared to different design formulas provided by the ACI Building Code and Canadian Standards Association S806-02 code. Results showed that columns reinforced with GFRP withstood loads similar to or higher than the columns reinforced with steel. Gains in strength, toughness and ductility were found for the concrete cores of well-confined columns. Setting the FRP compressive strength at 35% of the FRP maximum tensile strength resulted in a reasonable estimate of ultimate capacity compared to the experimental results.
