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Development of a high-performance, durable hybrid structure with a practical manufacturing method

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Retrofit of decks using by GFRP

FRP (fiber reinforced polymer) is a lightweight and corrosion-resistant structural material that increases the efficiency of construction and maintenance, as well as prolonging the longevity of the structure itself. However, the high cost of molding has inhibited the use of FRP to date. While reducing cost, it is important to establish a manufacturing technique that ensures resistance to stress and strain, and which avoids plasticity and anisotropy. GFRP has the advantage of being cheaper than other FRP materials (CFRP, carbon fiberglass reinforced plastic, and AFRP, aramid fiber reinforced plastic), and molding is easier. Much is expected from future research and development in this area. GFRP is now often used for the reinforcement of existing RC slabs in pedestrian bridges, and in environments with construction limitations or a high likelihood of corrosion.

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FEM analysis of joint using by GFRP

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Bending Test


Structural and Aesthetic Design Lab.
Professor Shinichi Hino
Associate Professor Shigenobu Kainuma
Assistant Professor Shigetada Hatakeyama
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