TY JOUR TI EXPERIMENTAL INVESTIGATIONS REINFORCED CONCRETE BEAMS 2PB26-4 BY THE VIBRATION METHOD KW reinforced concrete beams KW longitudinal reinforcement bar KW concrete class KW the main frequency of vibrations KW longitudinal oscillation KW lateral oscillation JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Abashin, E.G. PY 2016 IS 1 PB Belgorod State Technological University named after V.G. Shukhov