A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Bond Strength of Spliced Fiber-Reinforced Polymer Reinforcement
The discussed paper presents an interesting experimental study on the bond behavior of unconfined tension lap-spliced reinforcement. Steel-reinforced concrete beams and reinforced beams with fiber-reinforced polymer (FRP) bars -- glass FRP and carbon FRP -- were tested to provide additional experimental data for a better understanding of the bond strength between FRP and concrete. Variables such as splice length, surface condition, modulus of elasticity, axial rigidity, and bar casting position on bond strength were considered. The authors conclude that bond strength depends on splice length, the modulus of elasticity of reinforcement, and the axial rigidity of reinforcement, among other factors. It is true that the effect is linear in terms of the normalized reinforcement stresses. However, as bar size and splice length do not vary and the hypothesis of uniform distribution of bond stresses along splice length is assumed, additional information based on reinforcement deformation is needed to know the effect on average bond stress.
Bond Strength of Spliced Fiber-Reinforced Polymer Reinforcement
The discussed paper presents an interesting experimental study on the bond behavior of unconfined tension lap-spliced reinforcement. Steel-reinforced concrete beams and reinforced beams with fiber-reinforced polymer (FRP) bars -- glass FRP and carbon FRP -- were tested to provide additional experimental data for a better understanding of the bond strength between FRP and concrete. Variables such as splice length, surface condition, modulus of elasticity, axial rigidity, and bar casting position on bond strength were considered. The authors conclude that bond strength depends on splice length, the modulus of elasticity of reinforcement, and the axial rigidity of reinforcement, among other factors. It is true that the effect is linear in terms of the normalized reinforcement stresses. However, as bar size and splice length do not vary and the hypothesis of uniform distribution of bond stresses along splice length is assumed, additional information based on reinforcement deformation is needed to know the effect on average bond stress.
Bond Strength of Spliced Fiber-Reinforced Polymer Reinforcement
José R Martí-Vargas (author)
ACI structural journal ; 112
2015
Article (Journal)
English
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