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A new method for application of pre-stressed FRP laminates for strengthening of concrete structures

Reza Haghani (Institutionen för bygg- och miljöteknik, Konstruktionsteknik) ; Mohammad Al-Emrani (Institutionen för bygg- och miljöteknik, Konstruktionsteknik)
19th IABSE Congress Stockholm 2016 (2016)
[Konferensbidrag, övrigt]

Using bonded fiber reinforced polymer (FRP) laminates for strengthening and repair of structural members has been proven to be an effective and economic method. High strength and stiffness, light weight and good fatigue and durability properties of FRP composites together with advantages offered by adhesive bonding have made FRP bonding a suitable alternative for traditional strengthening and repair techniques. It has also been recognized that pre-stressing the FRP laminates prior to bonding would bring additional advantages such as reduced crack widths, postponing the yielding in tensile reinforcement, increasing the load bearing capacity and saving reinforcement material. Using pre-stressed laminates, however, is associated with very high interfacial stresses in the bond line at the laminate ends, which necessitates the use of mechanical anchors. This paper presents a new method and a device for applying pre-stressed FRP laminates to flexural structural members without the need for mechanical anchorage of the laminates.

Nyckelord: Anchorage, Bonding, Concrete, FRP, Pre-stressing, Repair, Strengthening



Denna post skapades 2017-05-31.
CPL Pubid: 249540

 

Institutioner (Chalmers)

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

Ämnesområden

Materialteknik

Chalmers infrastruktur