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Environmental durability of FRP to steel bonded joints in bridges

Mohsen Heshmati (Institutionen för bygg- och miljöteknik, Konstruktionsteknik) ; Reza Haghani (Institutionen för bygg- och miljöteknik, Konstruktionsteknik) ; Mohammad Al-Emrani (Institutionen för bygg- och miljöteknik, Konstruktionsteknik)
Maintenance, Monitoring, Safety, Risk and Resilience of Bridges and Bridge Networks - Proceedings of the 8th International Conference on Bridge Maintenance, Safety and Management, IABMAS 2016 p. 1335-1342. (2016)
[Konferensbidrag, refereegranskat]

Over the past four decades, fiber reinforced polymers (FRP) have been increasingly used for strengthening, repair and refurbishment of bridges. Although, the short-term behavior of FRP/steel bonded joints has been extensively studied, the subject of the durability has not been researched to the same degree. The lack of knowledge regarding the long-term performance presents a major obstacle to the growing application of FRPs in bridges. This work aims to investigate the effects of temperature, de-icing salt solutions and moisture on mechanical behavior of Carbon-FRP/steel joints. To realize this aim, forty CFRP/steel double lap shear specimens were aged in simulated de-icing salt solution and deionized water at 20°C and 45°C for up to eighteen months. The test results indicate a clear change of failure mode from cohesive to interfacial or interlaminar failure. Even though all the joints exhibited increasing load-bearing capacity during the first six months, the failure load of specimens aged at higher temperatures started to decline afterwards.

Denna post skapades 2017-01-18. Senast ändrad 2017-08-16.
CPL Pubid: 247306


Institutioner (Chalmers)

Institutionen för bygg- och miljöteknik, Konstruktionsteknik (2005-2017)



Chalmers infrastruktur