Seismic Performance of GFRP-Reinforced Concrete Rectangular Columns

Experimental Behavior of Glass Fiber-Reinforced Polymer-Reinforced Concrete Columns under Lateral Cyclic Load

“…9) and reduced the ductility capacity of the columns (refer to Table 4). Similar behavior was reported by Tavassoli et al (2015) and Ali and El-Salakawy (2016) for laterally loaded circular and square GFRPreinforced columns, respectively, where specimens with higher ALR showed faster deterioration with lower level of ductility capacity.…”

“…In particular, the experimental results of laterally loaded FRP-reinforced columns (Choo et al 2006;Sharbatdar and Saatcioglu 2009;Tavassoli et al 2015;and Ali and El-Salakawy 2016) show a stable response and large drift ratios at failure with acceptable levels of energy dissipation, confirming the effectiveness of the FRP transverse reinforcement. This played a major role in enhancing the confinement of the concrete core, which delays concrete crushing.…”

Seismic performance of seawater and sea sand concrete-filled ultra-high performance concrete tubes under low-cycle reversed lateral loading

“…Generally, the ductility factor of ordinary reinforced concrete columns is defined as the ratio of the yield displacement and the ultimate displacement. Existing investigations reported that the concrete columns reinforced by FRP bars have not a clear yield characteristics under the low-cycle reversed lateral loading (Ali and El-Salakawy, 2016; Tavassoli et al, 2015). Therefore, the ductility factor, μ is decided by the ratio of the elastic drift ratio and the ultimate drift ratio in this study, as follows,…”

Experimental Research on Bond Behavior between GFRP Bars and Stirrups-Confined Concrete

“…Unlike steel bars, the FRP bars behave anisotropic, non-homogeneous, and linear elastic properties, which may result in different force transfer mechanisms between bars and concrete. Some research on the performance of FRP-RC members [1,2] or structures [3,4] purport that the bond stress (τ)-slip (s) relationship differs greatly between that of FRP bars and that of steel bars, notably influencing the usability of the concrete structure. Contrarily, unlike steel bars, no uniform manufacturing standards have been established for FRP bars, resulting in divergences between the performance of FPR bars across different countries and manufacturers.…”