Bonding and flexural behaviors of rc members with CFRP strand sheets - Polyurea soft layer system

Masaki Arazoe, Akira Kobayashi, Yoshihiro Takahashi, Yasuhiko Sato

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A strengthened method using CFRP strand sheets, which consist of bunch of hardened continuous fiber strands, and polyurea resin (shortly polyurea) with low elastic modulus have been newly developed by authors. In the method, layer of polyurea is inserted between concrete surface and FRP with the aim of improving bonding ability of the strand sheet. In this study, two kinds of test, bonding test and flexural test, were performed to clarify those effects of the polyurea soft layer on bonding ability of the strand sheet. To clarify the influence affected by temperature, bonding tests were carried out at two different temperatures, -20°C and 23°C. It was proved that inserting a polyurea soft layer was effective for improving bonding ability between the strand sheet and concrete surface at low temperatures and room temperatures, and flexural capacity of concrete beams strengthened with the strand sheet.

Original languageEnglish
Title of host publicationProceedings of the 7th International Conference on FRP Composites in Civil Engineering, CICE 2014
PublisherInternational Institute for FRP in Construction (IIFC)
ISBN (Electronic)9781771363082
Publication statusPublished - 2014 Jan 1
Externally publishedYes
Event7th International Conference on FRP Composites in Civil Engineering, CICE 2014 - Vancouver, Canada
Duration: 2014 Aug 202014 Aug 22

Other

Other7th International Conference on FRP Composites in Civil Engineering, CICE 2014
CountryCanada
CityVancouver
Period14/8/2014/8/22

Fingerprint

Carbon fiber reinforced plastics
Concretes
Temperature
Resins
Elastic moduli
carbon fiber reinforced plastic
polyurea
Fibers

ASJC Scopus subject areas

  • Polymers and Plastics
  • Civil and Structural Engineering

Cite this

Arazoe, M., Kobayashi, A., Takahashi, Y., & Sato, Y. (2014). Bonding and flexural behaviors of rc members with CFRP strand sheets - Polyurea soft layer system. In Proceedings of the 7th International Conference on FRP Composites in Civil Engineering, CICE 2014 International Institute for FRP in Construction (IIFC).

Bonding and flexural behaviors of rc members with CFRP strand sheets - Polyurea soft layer system. / Arazoe, Masaki; Kobayashi, Akira; Takahashi, Yoshihiro; Sato, Yasuhiko.

Proceedings of the 7th International Conference on FRP Composites in Civil Engineering, CICE 2014. International Institute for FRP in Construction (IIFC), 2014.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Arazoe, M, Kobayashi, A, Takahashi, Y & Sato, Y 2014, Bonding and flexural behaviors of rc members with CFRP strand sheets - Polyurea soft layer system. in Proceedings of the 7th International Conference on FRP Composites in Civil Engineering, CICE 2014. International Institute for FRP in Construction (IIFC), 7th International Conference on FRP Composites in Civil Engineering, CICE 2014, Vancouver, Canada, 14/8/20.
Arazoe M, Kobayashi A, Takahashi Y, Sato Y. Bonding and flexural behaviors of rc members with CFRP strand sheets - Polyurea soft layer system. In Proceedings of the 7th International Conference on FRP Composites in Civil Engineering, CICE 2014. International Institute for FRP in Construction (IIFC). 2014
Arazoe, Masaki ; Kobayashi, Akira ; Takahashi, Yoshihiro ; Sato, Yasuhiko. / Bonding and flexural behaviors of rc members with CFRP strand sheets - Polyurea soft layer system. Proceedings of the 7th International Conference on FRP Composites in Civil Engineering, CICE 2014. International Institute for FRP in Construction (IIFC), 2014.
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