Hybrid Fiber Reinforced Polymer (HFRP), which is composed of Carbon FRP (CFRP) and Glass FRP (GFRP), has many advantages over conventional materials such as light weight, high specific strength, and corrosion resistance. HFRP is expected to find its application in severe corrosive environments or where light-weight rapid construction is required. This paper presents the development of a composite beam using an HFRP I-beam and precast Ultra-high strength Fiber reinforced Concrete (UFC) slab. UFC has high strength and high ductility, so it allows for reduction of the cross-section area and self weight. Full-scale flexural beam tests were conducted with different geometry of UFC slab and shear connection methods between the UFC slab and HFRP beam. For the composite beams with bolted-only connection, slip occurred between the HFRP beam and the UFC slab. On the other hand, slip was not observed in the composite beams with bonded-and-bolted connections. The flexural stiffness of beam specimens with bonded-and-bolted connection increased significantly compared with that of bolted-only connection specimens. Delamination failure was not observed in the compressive flange of the composite beams and the high tensile strength of the CFRP in the bottom flange could be utilized effectively by addition of the UFC slab on the top flange.
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- Composite Behavior of a Pultruded Hybrid CFRP-GFRP Beam with UFC Deck
Nguyen Duc Hai
- Springer Berlin Heidelberg