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Title: New High-Performance Rectangular FRP-Tube Beams Partially Filled with Concrete

Author(s): Ahmed Abouzied and Radhouane Masmoudi

Publication: Symposium Paper

Volume: 322


Appears on pages(s): 14.1-14.16

Keywords: Beams, Fiber Reinforced Polymer, Filament-Wound, Composites, Flexural Strength

DOI: 10.14359/51706965

Date: 6/18/2018

This paper introduces a rectangular concrete-filled fiber reinforced polymer (FRP) tube (CFFT) hybrid beam with an inner voided tube. The beam contains an outer rectangular filament-wound glass fiber reinforced polymer (GFRP) tube, and an inner voided circular filament-wound GFRP tube shifted toward the tension zone. The space between the tubes is filled with concrete. Steel bars, at the tension side, were provided to enhance both stiffness and serviceability of the beam. The flexural behavior of this voided CFFT beam was compared with a fully CFFT beam and another conventional steel reinforced concrete (RC) beam having identical dimensions. The results showed that the new hybrid composite beam behaves positively in terms of strength, ductility, and failure propagation, in addition to its high durability. The results also showed that, while the weight of the voided CFFT beam is 30% lighter than the weight of the conventional RC beam or the fully CFFT beam, its flexural capacity is 141% and 6% higher than their flexural capacities, respectively.