TY JOUR TI ROLE OF FE-BEARING COMPONENT IN PERLITE-BASED GEOPOLYMER WHEN STRUCTURAL AND PHASE TRANSFORMATIONS KW Fe-bearing component KW metallic milling yield KW geopolymer binder KW friable structure KW the Scherrer formula JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Kozhuhova, N.I. AU Zhernovskaya, I.V. AU Cherevatova, A.V. AU Sobolev, K.G. PY 2020 IS 5 PB Belgorod State Technological University named after V.G. Shukhov