In　order　to　ascertain　the　fire　resistance　performance　of　recycled　aggregate　concrete　(RAC)　components　with　different　concrete　compressive　strengths,　four　full-scaled　concrete　columns　were　designed　and　tested　under　high　temperature.　Two　of　the　four　specimens　were　constructed　by　normal　concrete　with　compressive　strength　ratings　of　C20　and　C30,　respectively,　while　the　others　were　made　from　recycled　coarse　aggregate　(RCA)　concrete　of　C30　and　C40,　respectively.　Identical　constant　axial　forces　were　applied　to　specimens　while　being　subjected　to　simulated　building　fire　conditions　in　a　laboratory　furnace.　Several　parameters　from　the　experimental　results　were　comparatively　analyzed,　including　the　temperature　change,　vertical　displacement,　lateral　deflection,　fire　endurance,　and　failure　characteristics　of　specimens.　The　temperature　field　of　specimens　was　simulated　with　ABAQUS　Software　(ABAQUS　Inc.,　Provindence,　RI,　USA)　and　the　results　agreed　quite　well　with　those　from　the　experiments.　Results　show　that　the　rate　of　heat　transfer　from　the　surface　to　the　interior　of　the　column　increases　with　the　increase　of　the　concrete＇s　compressive　strength　for　both　RAC　columns　and　normal　concrete　columns.　Under　the　same　initial　axial　force　ratio,　for　columns　with　the　same　cross　section,　those　with　lower　concrete　compressive　strengths　demonstrate　better　fire　resistance　performance.　The　fire　resistance　performance　of　RAC　columns　is　better　than　that　of　normal　concrete　columns,　with　the　same　concrete　compressive　strength.