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Title |
Performance Evaluation of FRCM Inorganic Matrix for Repair and Reinforcement of Concrete Structures
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Authors |
조민수(Min-Su Jo) ; 김민준(Min-Jun Kim) ; 이진용(Chin-Yong Lee) ; 정찬유(Chan-Yu Jeong) ; 김길희(Kil-Hee Kim) |
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DOI |
https://doi.org/10.4334/JKCI.2020.32.4.333 |
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Keywords |
섬유보강시멘트계매트릭스; 무기계 접착제; 내구성; 최적 배합 FRCM; inorganic matrix; durability; optimal mixture |
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Abstract |
Fiber-reinforced cementitious matrix (FRCM) composites made of textile grids embedded in an inorganic matrix are advanced cement-based materials designed for repair and retrofitting of concrete structures. Composite materials are the result of combining basic materials into new material systems that have improved properties compared to the basic materials. In this respect, improving the performance of the components of the composit is important. In this study, basic research was carried out to derive the optimum mixture for improving the performance of FRCM inorganic matrix for repair and retrofitting of concrete structures. For the development of the inorganic matrix for the FRCM composite, four groups were sequentially determined and the basic properties were confirmed. From the experimental results, optimum results were obtained with 2.0 % GGBS, 1.0 % Silica fume, 0.2 % PVA fiber, and 0.2 % EVA Polymer. In terms of durability, the alkali resistance was reduced by about 70 % compared with that of conventional mortar, and the water absorption rates were almost identical.
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