TY JOUR TI INVESTIGATION OF THE EFFECT OF THE ASH MINERAL ADDITIVES ON CEMENT QUALITY INDICATORS KW cement KW additives KW ash KW quality indicators JO Modern Technologies and Scientific and Technological Progress AU Fereferov, M.Y. AU Kadyrova, E.G. PY 2020 IS 2020 PB Federal State Funded Educational Establishment of Higher Education «Angarsk State Technical University»