To　study　the　seismic　performance　and　recoverable　capacity　of　reinforced　concrete　(RC)　columns　strengthened　in　flexure　by　employing　different　kinds　of　reinforcing　materials,　six　1/4.7　scale　circular　specimens　including　one　control,　which　were　strengthened　by　combining　near-surface-mounted　(NSM)　reinforcement　with　externally　bonded　basalt　fiber　reinforced　polymer　(BFRP)　sheets,　were　designed　to　investigate　the　seismic　behavior　and　tested　under　the　constant　axial　compressive　load　and　lateral　cyclic　loading.　The　experimental　parameters　included　different　types　of　NSM　reinforcing　materials　(carbon　or　basalt　fiber　reinforced　polymers,　steel),　confinement　conditions　(no　wrapping　and　wrapping),　and　different　types　of　externally　bonded　BFRP　sheets　(unidirectional　and　bidirectional　BFRP　sheets).　The　results　demonstrate　that.　the　scheme　of　NSM　reinforcement　is　an　effective　solution　toward　enhancing　the　flexural　capacity　and　the　recoverable　performance　of　RC　columns.　Compared　to　the　other　strengthening　schemes,　the　scheme　(column　C3-10B-4U)　combining　NSM　BFRP　bars　with　externally　bonded　BFRP　unidirectional　sheets　is　most　effective　in　increasing　the　elastic　energy　dissipation　capacities　and　also　enhancing　the　ductility　and　deformation　capacity　of　strengthened　columns,　but　do　not　change　the　stiffness　significantly.　Furthermore,　the　results　indicate　that　the　residual　displacement　of　the　column　C3-10B-4U　is　the　smallest　of　all　columns　under　the　same　applied　displacement　and　thereby　the　recoverability　of　the　column　C3-10B-4U　was　better　than　that　of　the　other　strengthened　columns.　©　2022