TY JOUR TI Mechanical Characteristics of Restoration Solutions When Metacaolines Are Used in Their Compositions KW Gypsum KW lime KW metacaolin KW pozzolan activity KW modified binder JO Proceedings of Petersburg Transport University AU Kazanskaya, L.F. AU Smetanin, A.A. PY 2023 IS 20 PB FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"