Open AccessOBTAINING BINDING COMPOSITIONS FOR CONCRETE IN A CENTRIFUGAL GRINDING MILL
Author(s) -
Л.Х. Загороднюк,
Liliya Zagorodnyuk,
В. И. Уральский,
Vladimir Ural'skiy,
Алексей Уральский,
Aleksey Ural'skiy,
Дмитрий Сумской,
D. Sumskoy,
А. Непризваннов,
A. Neprazvannov,
А. Шкулев,
А. Шкулев
Publication year - 2019
Publication title -
vestnik bgtu im. v.g. šuhova
Language(s) - English
Resource type - Journals
ISSN - 2071-7318
DOI - 10.34031/article_5db43db55dc701.66246266
Subject(s) - grinding , materials science , portland cement , cement , metallurgy , quartz , composite material
. The results of studies on the grinding of waste wet magnetic separation of ferruginous quartz-ites of the Lebedinsky mining and processing plant in a centrifugal grinding unit are given, their grinding features are established. Binder compositions are obtained at different ratios of cement and wet magnetic separation waste in a centrifugal grinding mill at different grinding modes. The features of grinding process-es are studied, the technological and physicomechanical properties of the obtained binding compositions are determined. The data obtained indicate that the use of mineral filler up to 10% provides compaction of the structure due to the presence of fine mineral filler, which will reduce the consumption of Portland cement to 10%. During mechanical activation of the compositions of binding compositions, a sharp increase in the con-centration of surface defects occurs, due to the violation of contacts between crystals with the rupture of sili-con-oxygen valence bonds. The activity of the wet magnetic separation waste of ferruginous quartzites is ap-parently due to the presence of a large number of exchange centers on their surface, a significant part of which are Bronsted acids and bases. The processes of hydration and the formation of cement with the use of binders requires further detailed study.