TY JOUR TI Mechanical Properties of Basalt Broken Stone Ballast KW Railway track KW basalt broken stone KW broken stone ballast KW ballast prism KW broken stone strength properties KW broken stone deformative properties KW broken stone grain composition JO Bulletin of scientific research results AU Kolos, A.F. AU Klisch, S.A. AU Sobolev, D.N. AU Zagitov, E.D. AU Kolos, I.V. AU Gladiy, V.G. PY 2022 IS 2022 PB FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"