%0 Journal Article %T THE QUESTION OF THE APPLICATION OF PRODUCTS OF VOLCANIC ACTIVITY IN THE MATERIAL SCIENCE %A Koval'chenko, O.. %A Alfimova, N.I. %K products of volcanic activity, tuff, ash, composite, knit-ing, mineral additives, concrete, energy %J Bulletin of Belgorod State Technological University named after. V. G. Shukhov %D 2017 %N 2 %P 4 %I Belgorod State Technological University named after V.G. Shukhov