TY JOUR TI COMPOSITE GYPSUM BENDING WITH MULTICOMPONENT MINERAL ADDITIVES OF DIFFERENT GENESIS KW composite gypsum binders KW multicomponent mineral additives KW performance characteristics JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Drebezgova, M.. AU Chernysheva, N.V. AU Shatalova, S.. PY 2017 IS 2 PB Belgorod State Technological University named after V.G. Shukhov