TY JOUR TI GEOPOLYMERS OBTAINED BY MECHANICAL ACTIVATION OF ORIGINAL COMPONENTS: REVIEW OF CURRENT TRENDS KW mechanical activation KW fly ash KW clay minerals KW kaolinite KW metakaolin KW geopolymer KW mills JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Kabirova, A.I. AU Ibragimov, R.A. PY 2024 IS 9 PB Belgorod State Technological University named after V.G. Shukhov