TY JOUR TI COMPOSITE SYSTEMS OF EXTERNAL REINFORCEMENT OF REINFORCED CONCRETE STRUCTURES KW external reinforcement KW reinforced concrete structures KW composite systems KW coupling JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Merkulov, S.I. AU Esipov, S.M. AU Esipova, D.V. PY 2022 IS 7 PB Belgorod State Technological University named after V.G. Shukhov