TY JOUR TI MODIFICATION OF HYDRAULIC ENGINEERING CONCRETE PROPERTIES BY ADDITIVES BASED ON HIGH MOLECULAR WEIGHT COMPOUNDS KW hydraulic concrete KW Portland cement KW polymer additive KW structure compaction KW structure formation JO Technique and technology of silicates AU Samchenko, S.V. AU Tobolev, P.D. PY 2024 IS 31 PB Individual Entrepreneur Svetlana Vasilievna Samchenko