Başaran Boğaçhan, Kalkan İlker, Beycioğlu Ahmet, Kasprzyk Izabela
Department of Construction, Vocational School of Technical Sciences, Amasya University, Amasya 05100, Turkey.
Department of Civil Engineering, Faculty of Engineering and Architecture, Kırıkkale University, Kirikkale 71450, Turkey.
Polymers (Basel). 2022 Apr 28;14(9):1796. doi: 10.3390/polym14091796.
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.
本研究是对埋入混凝土中的纤维增强聚合物（FRP）钢筋粘结性能的详细文字综述。迫切需要准确评估影响FRP与混凝土粘结的参数，并对这些影响进行量化。以前的大多数研究无法就这些参数各自的影响得出精确而全面的结论。本研究旨在列出所有影响混凝土与FRP粘结的物理参数，根据先前研究人员的普遍观点阐述这些参数各自的影响，并对这些影响给出合理的解释。对每个参数的研究都列在详细的表格中。在所有列出的参数中，表面纹理被确定对FRP与混凝土的粘结强度影响最为显著。粗砂涂层钢筋的粘结强度值超过了细砂涂层钢筋的相应值。然而，由于混凝土颗粒渗入细砂涂层，发现提高混凝土强度会使细砂涂层钢筋的粘结性能有更大改善。纤维类型、钢筋直径和混凝土抗压强度对钢筋粘结强度的影响主要源于钢筋树脂内部纤维的相对滑移，也称为剪滞效应。
