TY JOUR TI HIGH STRENGTH CONCRETE FOR LEGO-BLOCKS KW composite binder KW high-strength concrete KW lego-blocks KW self-compacting mixture KW micro-reinforcing cement stone additive JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Lesovik, V.S. AU Elistratkin, M.Y. AU Sal'nikova, A.S. PY 2021 IS 6 PB Belgorod State Technological University named after V.G. Shukhov