TY JOUR TI DEFORMATION OF CENTRICALLY COMPRESSED REINFORCED CONCRETE COLUMNS WITH ADDITION OF CONCRETE RUBBLE AS COARSE AGGREGATE KW reinforced concrete KW column KW structural concrete KW coarse aggregate KW concrete rubble KW columns bearing capacity KW central compression KW experimental research KW generalization of results JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Al'-Havaf, A.F. AU Nikulin, A.I. PY 2019 IS 4 PB Belgorod State Technological University named after V.G. Shukhov