FIELD: road building materials; mixtures for road bases. SUBSTANCE: mixture includes, %: combusted coal fly ash, 18-37; granulated blast-furnace slag, 43-67; and ground granulated blast-furnace slag used as active binding agent, 15-20. Use of said mixture provides cutting down transport expenses by reducing number of components and increasing uniform stability of roadbed. EFFECT: increased service period of motor roads. 2 tbl
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