著者

米丸 啓介 桑原 圭介

出版者

一般社団法人 日本建築学会

雑誌

日本建築学会技術報告集 (ISSN:13419463)

巻号頁・発行日

vol.26, no.62, pp.164-168, 2020-02-20 (Released:2020-02-20)

参考文献数

5

被引用文献数

1

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Long-term weathering test of carbon fiber reinforced plastic (CFRP) plates is ongoing. CFRP is made of PAN type carbon fiber and epoxy resin, and two types of test piece, unidirectional fiber reinforced composite plate and woven fabric reinforced composite plate, are used. Outdoor exposure test began in 1986, after which several series of tests were added. In this report, part of the results of observation and testing of CFRP plates carried out up to 33 years outdoor exposure are arranged and shown.

著者

米丸 啓介 松本 幸大

出版者

一般社団法人 日本建築学会

雑誌

日本建築学会技術報告集 (ISSN:13419463)

巻号頁・発行日

vol.20, no.46, pp.997-1000, 2014-10-20 (Released:2014-10-20)

参考文献数

6

被引用文献数

1

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The greatest feature of carbon fiber reinforced plastics (CFRP) is an overwhelming high-specific strength. CFRP can change architectural space innovatively. CFRP is a general material as one of the high-performance materials in other fields besides construction. Then, structural use of CFRP already has various track records such as airplane and automobile. Compared with other uses, the use period of construction is long, and higher durability is required especially of structural materials. In this research, experimental verifications are carried out for clarifying durability for the purpose of using CFRP expansively as a structural material of construction.

著者

金久保 利之 米丸 啓介 福山 洋

出版者

日本建築学会

雑誌

日本建築学会構造系論文集 (ISSN:13404202)

巻号頁・発行日

vol.62, no.492, pp.99-106, 1997

被引用文献数

9 5

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The relationship between local bond splitting behavior and average ones in reinforced concrete members has not been clear, yet. As the first step to make clear this problem, local bond behavior in case of no lateral reinforcement is discussed based on the study by Tepfers. In this study, bond stress, τ_b, is provided as the function of internal crack depth, rt, and angle between the principal bond stress and the axis of the reinforcement, α. The bond splitting test is carried out using new-designed specimens. Test results show that the value of α is assumed to be 34 degrees, and r_i has a proportional relationship with slippage of reinforcement, s. Using these results, a new relationship between τ_b and s is proposed.