TY JOUR TI Modified Composites Based on the Use of Ash and Slag Mixtures and Carbide Sludge for the Construction of Earthworks KW zologrunt mixtures KW ash and slag mixtures KW ash and slag mixtures reinforced with carbide sludge and portland cement KW soils JO Proceedings of Petersburg Transport University AU Ryabykh, D.M. AU Klyuev, S.V. AU Klyuev, A.V. AU Slobodchikova, N.A. PY 2026 IS 23 PB FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"