TY JOUR TI Features of cement paste hydration and hardening processess with the addition of hydrated cement KW addition in concrete KW heat of hydration KW kinetic of hardening KW setting time KW calorimeter JO Technique and technology of silicates AU Samchenko, S.V. AU Abramov, M.A. AU Egorov, E.S. PY 2025 IS 27 PB Individual Entrepreneur Svetlana Vasilievna Samchenko