TY JOUR TI COMPARISON OF SIX TYPES OF FIBERS FOR DISPERSED REINFORCEMENT OF ORDINARY CONCRETE KW concrete KW metal fibers KW non-metal fibers KW chrysotile KW technological application KW axial stretching JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Elistratkin, M.Y. AU Bardakov, E.A. AU Maslov, N.A. AU Shatalova, S.V. AU Karpenko, A.M. AU Buhtiyarov, I.Y. AU Bogun, N.. PY 2026 IS 11 PB Belgorod State Technological University named after V.G. Shukhov