Experimental Study on the Bond Performance between Fiber‐Reinforced Polymer Bar and Unsaturated Polyester Resin Concrete

Li, Wenchao; Zhou, Min; Liu, Fusheng; Jiao, Yuzhao; Wu, Qingfeng

doi:10.1155/2021/6676494

Cited by 4 publications

(3 citation statements)

References 14 publications

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“…There are three basic opinions on the influence eter on bond strength. The first of these opinions relies on the concept of th between the core and the fibers on the outer surface (shear lag effect) resu low slip resistance within the epoxy resin and at the epoxy-fiber interface tion of axial tension forces [18][19][20][21] (Figure 2). As the second view, a grea water is assumed to accumulate underneath the FRP bar with increasing The increasing amount of water causes the total volume of gaps in the m crease, which in turn will reduce the FRP-concrete bond strength [22][23][24].…”

Section: Inherent Properties Of Frp Materialsmentioning

confidence: 99%

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A Review on the Physical Parameters Affecting the Bond Behavior of FRP Bars Embedded in Concrete

et al. 2022

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The present study is a detailed literal survey on the bond behavior of FRP (Fiber Reinforced Polymer) reinforcing bars embedded in concrete. There is an urgent need for the accurate assessment of the parameters affecting the FRP–concrete bond and quantification of these effects. A significant majority of the previous studies could not derive precise and comprehensive conclusions on the effects of each of these parameters. The present study aimed at listing all of the physical parameters affecting the concrete-FRP bond, presenting the effects of each of these parameters based on the common opinions of the previous researchers and giving reasonable justifications on these effects. The studies on each of the parameters are presented in detailed tables. Among all listed parameters, the surface texture was established to have the most pronounced effect on the FRP–concrete bond strength. The bond strength values of the bars with coarse sand-coating exceeded the respective values of the fine sand-coated ones. However, increasing the concrete strength was found to result in a greater improvement in bond behavior of fine sand-coated bars due to the penetration of concrete particles into the fine sand-coating layer. The effects of fiber type, bar diameter and concrete compressive strength on the bar bond strength was shown to primarily originate from the relative slip of fibers inside the resin of the bar, also known as the shear lag effect.

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Section: Inherent Properties Of Frp Materialsmentioning

confidence: 99%

“…However, the degree of this reduction is non-linear and dependent on the test parameters. (Figure 7) [18,20,24,78]. The adherence failure types are introduced in Section 3.2.1 with regard to the clear cover and embedment/development length.…”

Section: Development (Ld) or Embedment Length (Le)mentioning

confidence: 99%

A Review on the Physical Parameters Affecting the Bond Behavior of FRP Bars Embedded in Concrete

et al. 2022

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“…Moreover, the failure mode and the ultimate bearing capacity of the anchor system are related to the thickness of the anchor agent. W. C. Li et al [33] conducted an experimental study on bond performance between a fiber-reinforced polymer (FRP) bar and unsaturated polyester resin concrete (UPC). It was found that the failure types of FRP bar-UPC specimens depend on the interface bond stress, UPC tensile stress, and stress of the FRP bar; furthermore, the FRP bar-UPC bond strength decreases with the increase of the diameter of the FRP bar due to the shear-lag effect.…”

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confidence: 99%