Mechanical properties of recycled PET fibers in concrete
By F. Pelisser, O. Montedo, P. Gleize, H. R. Roman. 2012
171 citations recorded by the source corpus.
Fiber-reinforced concrete represents the current tendency to apply more efficient crack-resistant concrete. For instance, polyethylene terephthalate (PET) is a polyester polymer obtained from recyclable bottles; it has been widely used to produce fibers to obtain cement-based products with improved properties. Therefore, this paper reports on an experimental study of recycled-bottle-PET fiber-reinforced concrete. Fibers with lengths of 10, 15 and 20 mm and volume fractions of 0.05, 0.18 and 0.30% related to the volume of the concrete were used. Physical and mechanical characterization of the concrete was performed, including the determination of compressive strength, flexural strength, Young’s modulus and fracture toughness as well as analysis using mercury intrusion porosimetry (MIP) and scanning electron microscopy (SEM). Flexure and impact tests were performed after 28 and 150 days. No significant effect of the fiber addition on the compressive strength and modulus of elasticity was observed. However, the Young’s modulus was observed to decrease as the fiber volume increased. At 28 days, the concrete flexural toughness and impact resistance increased with the presence of PET fibers, except for the 0.05 vol.% sample. However, at 150 days, this improvement was no longer present due to recycled-bottle-PET fiber degradation in the alkaline concrete environment, as visualized by SEM observations. An increase in porosity also has occurred at 365 days for the fiber-reinforced concrete, as determined by MIP.
Subfields: Building and Construction, Civil and Structural Engineering
View Paper: https://www.semanticscholar.org/paper/b2d27a622f122fff05e992cb654358f03a7e2865
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Citations in the corpus
- Early age performance and mechanical characteristics of recycled PET fibre reinforced concrete (2016, background): “[12] who, also with reference to flexural performance, highlighted the detrimental effects of the alkaline environment on the degradation of the PET fibres.”
- Use of recycled plastics in concrete: A critical review. (2016, unknown): “The results of the existing studies show that the Ec of the plastic FRC does not differ significantly from that of conventional concrete (Karahan and Atis , 2011; Kayali et al., 1999, 2003; Mazaheripour et al., 2011; Pelisser et al., 2012).”
- Mechanical properties of concrete reinforced with recycled HDPE plastic fibres (2016, background): “Recycled polyethylene terephthalate (PET) fibres were also tried but found to degrade after exposure to the alkalinity of concrete [19, 20].”