Replication Data for: Bond Characteristics of Glass and Basalt Fiber Reinforced Polymer Bars Embedded in Self-Compacting Concrete Containing Fly Ash and Granulated Blast Furnace Slag

The present study pertains to the bond behavior of GFRP, BFRP and steel bars in Self-Consolidating Concrete (SCC) with and without substitute. Three types of SCC mixtures, namely SCC with only Portland Cement (PC), SCC with Fly Ash (FA) as substitute for PC and SCC with Granulated Blast Furnace Slag (GBFS) as substitute for PC, were prepared. Within the scope of the study, 36 hinged beam specimens with a constant embedment length were tested and the experimental bond stress values at failure were compared to the analytical bond strength estimates from the development length equations in various international codes and literature. The tests at the 28th and 90th days after concrete cast unveiled the fact that BFRP bars have bond performances and bond strength values close to the respective performances and values of the steel bars. Yet, the related values and bond performances of GFRP bars were shown to remain well below the respective values and performances of BFRP and steel bars. The development length equations, previously proposed by the authors, were found to provide reasonable and accurate estimates for specimens with BFRP and GFRP bars, while all of the code equations failed to estimate the experimental behavior of the specimens accurately.

本研究围绕玻璃纤维增强聚合物（GFRP）筋、玄武岩纤维增强聚合物（BFRP）筋及钢筋在掺加或未掺加水泥替代材的自密实混凝土（SCC）中的粘结性能展开。本次试验制备了三种自密实混凝土配合比：仅掺硅酸盐水泥（PC）的SCC、以粉煤灰（FA）替代部分硅酸盐水泥的SCC，以及以粒化高炉矿渣（GBFS）替代部分硅酸盐水泥的SCC。研究范围内共制作36根锚固长度固定的铰接梁试件，将试验测得的破坏粘结应力值，与各类国际规范及文献中锚固长度公式推导得到的理论粘结强度估算值进行对比分析。分别在混凝土浇筑后28天和90天开展的试验结果表明，BFRP筋的粘结性能与粘结强度值与钢筋的对应性能和数值相近；而GFRP筋的相关性能与数值则显著低于BFRP筋及钢筋。研究团队此前提出的锚固长度公式，可对配置BFRP筋和GFRP筋的试件给出合理且精准的估算结果，而所有现行国际规范中的锚固长度公式均无法准确预测此类试件的试验表现。