Akademik Veri Yönetim Sistemi
STRUCTURES, cilt.70, 2024 (SCI-Expanded, Scopus)
This paper presents the results of an experimental evaluation of the retrofitting/strengthening of flexure-deficient reinforced composite (RC) beam systems with polymer-modified mortar (PMM). A total of 12 full-scale beams were tested. The beams were divided into two series, A and B, with six beams each. Each series has three groups of beams depending upon depth. All the beams were subjected to three-point loading under monotonic loading conditions. The beams in series A were loaded until failure, and failure loads were noted. The beams in series B were loaded to 70 % of the corresponding failure load. Afterwards, all 12 beams were retrofitted/strengthened with polymer-modified mortar (PMM) and retested until failure. During loading at the first crack and at failure of the RC beam system retrofitted by the PMM, the crack pattern and deflections were recorded for all the specimens. The results from the experimental tests indicate that the load carrying capacity of the retrofitted/ strengthened beam system was significantly greater than that of the control beam for both series. In other words, the load-carrying capacity of the beams in group B was greater than that of the beams in group A and the control beams.