This　paper　aims　to　illuminate　the　effects　of　elevated　temperature　on　mechanical　properties　of　fiber　reinforced　plastic　(FRP)　strengthened　concrete　glued　by　modified　epoxy　resin　(MER)　adhesive.　Tensile　strength,　flexural　strength　and　interface　bonding　properties　of　FRP-MER-concrete　(C30　and　C50)　were　measured　after　exposure　to　80,　160　and　240　degrees　C　for　1.5　h　and　3　h,　respectively.　Microstructures　of　the　interface　were　analyzed　by　scanning　electron　microscope　(SEM).　The　ultimate　tensile　strength　and　strain　of　MER-FRP,　and　bonding　strength　of　FRP-concrete　interface　gradually　decrease　as　exposure　temperature　and　time　increase.　The　ultimate　capacity　of　FRP-strengthened　concrete　gradually　decreases.　The　loss　rates　of　ultimate　capacity　and　fracture　energy　of　high-strength　specimens　are　greater　than　those　of　low-strength　specimens.　The　fracture　energy　loss　of　FRP-strengthened　concrete　is　more　sensitive　to　temperature　than　to　exposure　time.　The　stress-strain　relationship　of　FRP　follows　a　bilinear　behavior　for　both　types　of　concrete.　Micro-cracks　in　MER-concrete　interface　and　concrete　matrix　degrade　the　mechanical　properties　of　FRP-strengthened　concrete　at　elevated　temperature.　(C)　2016　Elsevier　Ltd.　All　rights　reserved.