Flexural behavior of a hybrid FRP and lightweight concrete sandwich bridge deck

Keller, Thomas; Schaumann, E; Vallée, Till

doi:10.1016/j.compositesa.2006.07.007

Cited by 120 publications

(58 citation statements)

References 9 publications

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“…As a result, 368 several variants of sandwich bridge decks, spanning transversely or longitudinally between 369 supporting elements (such as concrete, steel and timber beams) have been developed. 370 Keller et al (2007) presented a new concept for a lightweight hybrid-FRP deck. This 371 deck had GFRP for the tensile skin, lightweight concrete for the core, and a thin layer of ultra-372 high performance reinforced concrete for the compressive skin.…”

Section: Bridge and Pedestrian Decks 366mentioning

confidence: 99%

“…FRP sandwich systems have been widely 33 used in the aerospace, aircraft, and marine industries because of their many advantages such as 34 improving the efficiency in transportation vehicles (Bakis et al 2002). Such systems have also 35 drawn considerable interest in the construction industry and are now emerging as effective 36 alternatives for use in niche civil infrastructure applications (Keller et al 2007). The low weight 37 of FRP sandwich systems facilitates handling during assembly, while reducing installation and 38 transportation costs.…”

Section: Introduction 29mentioning

confidence: 99%

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State-of-the-Art Review on FRP Sandwich Systems for Lightweight Civil Infrastructure

et al. 2017

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3Fiber reinforced polymer (FRP) sandwich systems as primary load-bearing elements are 4 relatively new concepts in lightweight civil infrastructure. These systems offer a combination 5 of light weight, high strength, thermal insulation for some types, and service-life benefits. 6Recent developments and applications have demonstrated that these composite systems have 7 emerged as a cost-effective alternative, especially when each material component is 8 appropriately designed. Still, some issues and challenges need to be addressed if FRP systems 9 are to gain widespread use in civil infrastructure. This paper provides an overview of the state-10 of-the-art research, development, and applications of FRP sandwich systems. It also identifies 11 the challenges and future opportunities for the broad use of these advanced systems in civil 12 engineering and construction. 13

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Section: Bridge and Pedestrian Decks 366mentioning

confidence: 99%

Section: Introduction 29mentioning

confidence: 99%

State-of-the-Art Review on FRP Sandwich Systems for Lightweight Civil Infrastructure

et al. 2017

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“…Many studies suggest that combining FRP composites with high stiffness and/or high compression strength of conventional materials has been proven effective (Keller et al 2007). These have resulted in many research and developments focusing on hybrid systems that combine FRP composites with concrete (Hollaway and Head 2001).…”

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confidence: 99%

Composite Behaviour of a Hybrid FRP Bridge Girder and Concrete Deck

Manalo

Aravinthan

Mutsuyoshi

et al. 2012

Advances in Structural Engineering

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This paper involves experimental investigation onto the composite behaviour of a hybrid FRP bridge girder with an overlying concrete deck. Two types of shear connections were investigated: epoxy resin adhesives alone and epoxy resin combined with steel u-bolts. The results showed that the steel u-bolts combined with epoxy resin provided a more effective connection; hence a full-size specimen was prepared based on this result. Four-point bending test was carried out to determine the behaviour of a full-scale composite hybrid FRP girder and concrete deck. The composite action resulted to a higher stiffness and strength with the hybrid FRP girder exhibiting higher tensile strain before final failure. There was a significant decrease in the compressive strain in the top flange of the FRP girder thereby preventing the sudden failure of the beam. The composite beam failed due to crushing of the concrete followed by shear failure in the top flange and web of the FRP girder.

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“…4,5,8,9,22 Therefore, bolts and dowels are designed fixed in predrilled holes; however, the gap and flexibility of bolts and dowels have led to overdue interface slips. 3,5,8,[23][24][25] It was also found that the gap could be prevented effectively by burying bolts and dowels into concrete.…”

Section: Shear Connectors and Bilinear Model In Hybrid Frp-concrete Bmentioning

confidence: 99%

“…2,7,[15][16][17][18][19][20][21] FRP composites cannot be welded like steel, and therefore, the performance of shear connectors in FRP-concrete interface totally differentiates from that of steel-concrete composite beam with head studs. 15,16,[22][23][24][25][26] The most significant difference is that the load-deflection curves demonstrate a bilinear behavior in many literatures 2,17,27,28 . Therefore, the following pages will propose a novel analysis model to quantify the links between interfacial shear force and relative slip.…”

Section: Introductionmentioning

confidence: 99%

Bilinear load-deflection model of fiber-reinforced polymer–concrete composite beam with interface slip

Wang

Zou

Feng

2015

Advances in Mechanical Engineering

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The design of fiber-reinforced polymer-concrete hybrid beam is usually governed by deformation. Due to the rigidity degradation caused by fiber-reinforced polymer-concrete slip, the load-slip and load-deflection curves demonstrate a bilinear characteristic. The originality of this article is to propose a bilinear analytical model and to determine two dominant parameters in this model, namely, initial bond stress and slip modulus of the interconnection. This model consists of two distinct linear stages. In Stage I, full composite action between fiber-reinforced polymer and concrete is obtained, and no slip exists; Stage II commences once interfacial bond force diminishes, when slip increases linearly versus load, and the overall beam rigidity drops compared with that in Stage I, indicating only partial composite action is realized. Finally, three large-scale specimens were tested to validate the proposed bilinear model and to calculate the two parameters.

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Flexural behavior of a hybrid FRP and lightweight concrete sandwich bridge deck

Cited by 120 publications

References 9 publications

State-of-the-Art Review on FRP Sandwich Systems for Lightweight Civil Infrastructure

State-of-the-Art Review on FRP Sandwich Systems for Lightweight Civil Infrastructure

Composite Behaviour of a Hybrid FRP Bridge Girder and Concrete Deck

Bilinear load-deflection model of fiber-reinforced polymer–concrete composite beam with interface slip

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