Fiber　reinforced　polymer　(FRP)　jackets　with　a　large　rupture　strain　are　formed　by　embedding　polyethylene　terephthalate　(PET)　or　polyethylene　naphthalate(PEN)　fibers　in　the　epoxy　resin　binder.　PEN　and　PET　fibers　are　made　of　recycled　materials　(e.g.,　PET　bottles),　possessing　the　advantages　of　large　rupture　strain,　low　elastic　modulus,　environmental　protection　and　economy.　To　simulate　the　actual　non-uniform　corrosion　of　steel　bars　in　the　columns,　the　corrosion　rate　of　steel　bars　in　the　plastic　hinge　region　was　designed　as　15%　by　using　electrochemical　corrosion　method.　Partially　corroded　reinforced　concrete　columns　with　different　reinforcement　ratios　were　strengthened　with　carbon　FRP　(CFRP)　and　PET-600　composites　respectively.　All　the　columns　were　subjected　to　the　quasi-static　tests.　The　seismic　performance　of　hysteretic　hoops,　failure　modes,　residual　displacement,　stiffness　degradation,　damping　ratio　and　energy　dissipation　were　analyzed.　The　experimental　results　showed　that　PET-600　and　CFPP　strengthened　columns　had　the　basically　same　anti-seismic　performance,　indicating　that　PET-600　could　be　worked　as　a　new　type　of　high　performance　strengthening　materials　in　the　structure　strengthening　field.　(C)　2018　Elsevier　Ltd.　All　rights　reserved.