Comparative durability study of CFRP strengthened tubular steel members under cold weather
Kabir, M.H., Fawzia, S., Chan, T.H.T., & Gamage, J.C.P.H (2016) Comparative durability study of CFRP strengthened tubular steel members under cold weather. Materials and Structures, 49(5), pp. 1761-1774.
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In strengthening systems, the CFRP (Carbon Fibre Reinforced Polymer) materials typically have excellent resistance against environmental conditions; however, the performance of adhesives between CFRP and steel is generally affected by various environmental conditions such as marine environment, cold and hot weather. This paper presents the comparative durability study of CFRP strengthened tubular steel structures by using two different adhesives such as MBrace saturant and Araldite K630 under four-point bending. The program consisted of testing twelve CFRP strengthened specimens having treated with epoxy based adhesion promoter, untreated surface and one unstrengthened specimen and conditioned under cold weather for 3 and 6 months to determine the environmental durability. The beams were then loaded to failure in quasi-static manner under four-point bending. The structural responses of CFRP strengthened tubular steel beams were compared in terms of failure load, stiffness and modes of failure. The research findings show that the cold weather immersion had adversely affected the durability of CFRP strengthened steel members. Design factor is also proposed to address the short-terms durability performance under cold weather.
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|Item Type:||Journal Article|
|Keywords:||CFRP, adhesive, durability, tubular steel beam, cold weather|
|Divisions:||Current > Schools > School of Civil Engineering & Built Environment
Current > QUT Faculties and Divisions > Science & Engineering Faculty
|Copyright Owner:||Copyright 2015 RILEM|
|Deposited On:||12 Jun 2015 00:15|
|Last Modified:||19 May 2016 21:50|
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