TY JOUR TI IMPROVING THE PHYSICAL AND MECHANICAL CHARACTERISTICS OF A CEMENT COMPOSITE MATERIAL BASED ON MODIFIED CHRYSOTILE FIBER KW cement composite material KW chrysotile fibers KW sodium liquid glass KW particle entrainment KW density KW water absorption KW porosity KW flexural strength JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Naumova, L.N. PY 2025 IS 10 PB Belgorod State Technological University named after V.G. Shukhov