Fibre Reinforced Plastic (FRP) bars are currently used for special concrete structures in areas sensitive to magnetic fields and severe environmental conditions which accelerate corrosion of the steel reinforcement, and consequently deterioration of the structure. This paper presents analysis of experimental results obtained from testing eight one-way concrete slabs reinforced with glass-fibre reinforced plastic (GFRP) rebars, carbon-fibre reinforced plastic (CFRP) rebars and conventional steel. The slabs were tested under four-point static loading to investigate their flexural limit states, including the behaviour prior to cracking, at cracking, ultimate capacities and modes of failure. The investigation presented herein is focused on deflection of the slabs. Based on this investigation, design recommendations and guidelines are proposed for the deflection and cracking load calculations.
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