TY JOUR TI ON THE QUESTION OF CHOOSING THE OPTIMAL WATER-CEMENT RATIO IN THE PRODUCTION OF THERMAL INSULATING FOAM CONCRETE KW water-cement ratio KW macrostructure KW pore diameter KW designing the composition KW thermal insulating foam concrete JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Vinokurova, O.V. AU Baranova, A.A. PY 2022 IS 7 PB Belgorod State Technological University named after V.G. Shukhov