TY JOUR TI Water-Holding Capacity of Clogged Granite Crushed Stone KW Railway track KW granite crushed stone KW ballast prism KW clogging of crushed stone ballast layer KW water retention properties KW degree of water saturation JO Bulletin of scientific research results AU Igoshev, I.S. AU Kolos, A.F. PY 2025 IS 2025 PB FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"