TY JOUR TI INFLUENCE OF THE TYPE OF FIBERS USED ON THE STRENGTH AND DEFORMATION OF DISPERSED-REINFORCED LIGHTWEIGHT CONCRETE KW lightweight concrete KW strength KW ultimate deformation KW fiber KW concrete matrix JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Chernil'nik, A.A. AU Smachney, V.Y. AU El'shaeva, D.M. AU Zherebtsov, Y.V. AU Dotsenko, N.A. PY 2022 IS 7 PB Belgorod State Technological University named after V.G. Shukhov