TY JOUR TI STUDY OF THE FOULING OF MODIFIED CEMENT COMPOSITES BY BIODEGRADING MICROORGANISMS UNDER EXPOSURE TO SOIL CONDITIONS KW cement composites KW antiseptic additives KW bacteria KW mold fungi KW biostability JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Ledyaykin, N.V. PY 2026 IS 11 PB Belgorod State Technological University named after V.G. Shukhov