Abstract This paper presents an experimental study on the effect of the waste plastic and the fibre-reinforced polymer on the shear behaviour of the rectangular reinforced concrete beams. The experimental program was aimed to study the ductility of the beam that replaced the steel stirrups with the laminate of carbon fibre reinforced polymer as a transverse while the glass fibre reinforced polymer GFRP as longitudinal reinforced and add the waste plastic polyethylene terephthalate PET with different percentage 0.5%, 1%, and 1.5%. The parameters of this investigated include the percentage of waste plastic polyethylene terephthalate PET and the percentage of CFRP that replaced with steel which equals 50%, 100%, and 150% from the steel strips. All beams cast with the dimensions 150mm width, 200mm height, and 1400mm length to test under two-point load. The results of this paper showed that the clear effect of the polyethylene terephthalate PET on the shear behaviour of beams which enhanced the ductility, ultimate deflection, ultimate load, and stiffness. Besides to the results above the fibre reinforced concrete beam considered more safety against the corrosion because the fibre had a good corrosion resistance and also reduced the pollution in environmental due to the large amount of waste plastic bottles that produce each year
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Mahmoud et al. (2024) studied this question.
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