Japan Society of Civil Engineers 2020 Annual Meeting

Presentation information

第I部門

維持管理(補修)

Chair:Takeshi Miyashita

[I-422] Fundamental study on the effect of water absorption in epoxy adhesive used in CFRP-steel joints

〇Jiajing Xie1, Muye Yang1, Shigenobu Kainuma1 (1.kyushu University)

Keywords:Epoxy adhesive, Moisture diffusion, Environmental degradation, CFRP-steel joint

Recent years, CFRP was usually used to reinforce steel structures. One major drawback when it comes to
using CFRP composites for strengthening and repairing steel structures is the lack of knowledge relating to the long-term performance and durability properties of CFRP/steel bonded joints. Particularly, adhesive degradation is the most widely concerned problem. In this study, the moisture test was used to the influence of the environment on the water absorption rate. The DSC test and FTIR test were used to investigate the effect of water on the internal structure after the resin absorbed water.

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