TY JOUR TI Quality assessment of raw materials in the Republic of Burundi for road concrete production KW Burundian road concrete KW raw materials KW quality KW cement KW sand KW crushed stone JO Smart composite in construction AU Ndayizeye, F.. AU Belkova, N.A. AU Shelkovnikova, T.I. AU Ivashchenko, E.I. PY 2025 IS 6 PB Yaroslavl State Technical University