Recycled PET fiber as reinforcement of cement-based materials
Margareth da Silva Magalhães1; Matheus Soares Viana Fernandes1
1 State University of Rio de Janeiro, UERJ
doi:10.20906/CPS/COB-2015-2337
Resumo
This paper deals with an experimental study on the influence of recycled polyethylene terephthalate (R-PET) fibers as reinforcement of cementitious materials. The mixtures were produced using Portland cement, fly ash, silica sand, superplasticizer and different volumes of R-PET fibers (0%, 1.0%, 1.5% and 2.0%). Four-point bending and compressive tests were performed. The results indicated that the incorporation of R-PET fibers significantly improve the post-cracking behaviour of mortars with a major improvement in mortar toughness and deflection capacity. The maximum volume of PET fibers for a desired workability and performance of the composite was 2.0%, which showed a deflection hardening behaviour. Mixtures with 1.0% and 1.5% fiber volume content exhibited deflection-softening behaviour, with a single cracking formation.
Palavras-chave: Bending behaviour; cement based composite; FRCC; PET fibers