TY JOUR TI GYPSUM-POLYSTYRENE COMPOSITES FOR BUILDING INDUSTRY KW gypsum KW insoluble anhydrite KW hemihydrate gypsum KW cullet KW polystyrene foam KW thermal conductivity KW heat-insulation materials JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Klimenko, V.. AU Pavlenko, V.. AU Gasanov, S.. AU Mamin, S.. PY 2016 IS PB Belgorod State Technological University named after V.G. Shukhov