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Title |
Fleuxral Performance of RC Members Strengthened with FRCM
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Authors |
서유재(Yujae Seo) ; 주현진(Hyunjin Ju) |
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DOI |
https://doi.org/10.11112/jksmi.2025.29.4.36 |
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Keywords |
휨강도; FRCM; 데이터베이스; 보강공법; 단면해석 Flexural strength; Fabric-reinforced cementitious matrix; Database; Strengthening method; Sectional analysis |
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Abstract |
Fabric-Reinforced Cementitious Matrix (FRCM), a method for strengthening reinforced concrete (RC) structures, involves embedding fabric within a cementitious matrix as an external reinforcement system. To ensure the effectiveness of FRCM strengthening, the interface between the RC substrate and the FRCM must remain stable. This study applies a bond behavior evaluation model that accounts for failure mechanisms at the interface between the cement matrix and the fabric to sectional analysis for assessing the flexural strength of FRCM-strengthened members. A total of 59 test results from FRCM-strengthened beams and one-way slabs were collected from existing literature. The flexural strength of these specimens was evaluated under four different conditions: without considering FRCM reinforcement, considering only fabric properties, applying a bond behavior evaluation model, and applying a proposed bond behavior evaluation model that additionally accounts for spacing between fabrics and bearing stress. Among these, the model incorporating additional fabric characteristics demonstrated superior accuracy in predicting flexural strength with a mean, standard deviation, and coefficient of variation of 1.216, 0.185, and 0.152, respectively.
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