TY JOUR TI EFFECT OF MECHANOACTIVATION IN A VIBRATION MILL ON THE PROPERTIES OF BINDING COMPOSITIONS WITH THE ADDITION OF VOLCANIC SAND KW mechanical activation KW vibrating mill KW volcanic sand KW composite binder KW specific surface area KW compressive strength KW granulometric composition KW X-ray phase analysis JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Chernukha, D.G. AU Zagorodnyuk, L.K. AU Ivanov, G.V. PY 2026 IS 11 PB Belgorod State Technological University named after V.G. Shukhov