Akademik Veri Yönetim Sistemi
Engineering Failure Analysis, cilt.177, 2025 (SCI-Expanded)
This study investigates the bond-slip behavior of Textile Reinforced Mortar (TRM) strips applied to concrete substrates under axial loading, with particular emphasis on the effects of geometric, material, and anchorage parameters. A total of 48 full-scale specimens were tested under direct tension using a custom-designed experimental setup, instrumented with high-precision LVDTs and supplemented by Digital Image Correlation (DIC) to capture detailed strain distributions. Key variables included concrete strength (C15 and C30), TRM strip width (50 mm and 100 mm), bonding length (150 mm, 300 mm, 450 mm), number of anchors (1 to 6), and anchor configurations (1-row and 2-row systems). The use of fan-type CFRP anchors embedded with cementitious mortar significantly enhanced the bond performance, increasing both maximum load and energy dissipation capacity. Experimental findings revealed that increasing strip width and bonding length improved stiffness and load capacity, up to an effective bond length threshold. DIC analysis enabled high-resolution strain mapping across the TRM-concrete interface, highlighting the localization of maximum strain near anchorage regions and confirming the mechanical influence of both anchorage density and vertical distribution. On average, anchored specimens exhibited 63 % higher peak load and over 100 % greater energy absorption than their unanchored counterparts. The results demonstrate that anchor usage, configuration, and TRM geometry are critical design parameters governing the efficiency, ductility, and reliability of TRM-concrete systems. This research contributes to a better understanding of TRM interface mechanics and provides valuable insights for the design and optimization of strengthening strategies in reinforced concrete structures.