TY JOUR TI FORECASTING STRENGTH OF PORTLAND CEMENT IN THE PRESENCE OF FUEL ASHES KW fuel ash KW mineral additive KW inorganic binder KW Portland cement JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Markov, A.Y. AU Bezrodnykh, A.A. AU Markova, I.Y. AU Strokova, V.V. AU Dmitrieva, T.V. AU Stepanenko, M.A. PY 2020 IS 5 PB Belgorod State Technological University named after V.G. Shukhov