TY JOUR TI THE EFFECT OF ALKALINE MODIFICATION ON THE PROPERTIES OF CLAY-BASED CERAMICS KW clay KW alkaline modification KW sodium carbonate KW zeta potential KW X-ray fluorescence analysis KW quantitative X-ray diffraction analysis KW thermal analysis JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Sutakova, E.M. AU Tagrov, V.N. AU Vasilyeva, T.I. PY 2026 IS 11 PB Belgorod State Technological University named after V.G. Shukhov