TY JOUR TI CERAMIC RADIATION-PROTECTIVE COMPOSITES BASED ON HIGH-ALUMINA BINDER BISMUTH OXIDE ADDITIVE KW artificial ceramic binders KW bismuth oxideaggregate KW ceramic composite materials KW radiation-protective materials KW gamma radiation KW linear attenuation coefficient JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Yashkina, S.Y. AU Doroganov, V.A. PY 2017 IS 2 PB Belgorod State Technological University named after V.G. Shukhov