TY JOUR TI USE OF OPAL-CRYSTOBALITE-TRIDIMITE MICRO-FILLER IN DENSE AGGREGATE CONCRETE KW dense aggregate concrete KW opal-cristobalite-tridymite microfiller KW abiomorphic silicite KW shock-abrasive dispersion KW cavitation dispersion KW hydration activity KW compressive strength JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Lukutcova, N.P. AU Pykin, A.A. AU Chivikova, E.V. PY 2020 IS 5 PB Belgorod State Technological University named after V.G. Shukhov