TY JOUR TI THE EFFECTIVENESS OF USING A POLYFUNCTIONAL ADDITIVE BASED ON BISMUTH TITANATES FOR CEMENT COMPOSITIONS KW cement KW additive KW bismuth titanate KW plaster KW concrete mixture KW grout KW economic efficiency JO Technique and technology of silicates AU Kozlova, I.V. AU Dudareva, M.O. AU Senushkin, D.S. AU Sergeev, M.A. PY 2024 IS 31 PB Individual Entrepreneur Svetlana Vasilievna Samchenko