TY JOUR TI OPTIMIZATION OF TECHNOLOGICAL PARAMETERS OF FORMING FINE-FRACTION EXPANDED CLAY FROM LOW-PLASTIC RAW MATERIALS KW expanded clay gravel KW preparation of raw materials KW molding methods KW Kharlanovskaya clay KW Lat-nenskaya clay KW Belgorodsky chalk KW rotor speed KW mass moisture KW powdering KW fractional composi-tion KW bulk density. JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Trepalin, D.V. AU Mishin, D.A. AU Trepalina, Y.N. AU Kovalev, S.V. AU Smagina, A.R. PY 2025 IS 10 PB Belgorod State Technological University named after V.G. Shukhov