Heat Treatment of Clay Shales and Their Utilization as Active Mineral Additives for the Production of Composite Cements
Amiraliyev B. Taimasov B. Potapova E. Sarsenbaev B. Begentayev M. Dauletiyarov M. Kuandykova A. Abdullin A. Ainabekov N. Auyesbek S.
June 2025Multidisciplinary Digital Publishing Institute (MDPI)
Journal of Composites Science
2025#9Issue 6
A structure of composite cement with 15 wt.% thermally activated clay shales has been developed. The phase composition and properties of aluminosilicate rocks of the Kazakhstan deposits—Mynaral and Kuyuk—have been studied. It has been shown that aluminosilicates are related to clay shales by their composition. The regularities of thermal activation processes of aluminosilicates have been established, and it has been shown that pozzolanic activity increases for all compositions with an increase in the heat treatment temperature from 700 to 900 °C. The clay shale of the Mynaral deposit is characterized by the highest activity. The physicomechanical properties of the obtained composite cements–including Portland cement clinker, gypsum, and thermally activated clay shale—have been studied. It has been shown that when replacing up to 15 wt.% Portland cement clinker with thermally activated clay shales, there is no decrease in the strength properties of the composite cement. The obtained results allow us to consider heat-treated clay shales as active mineral additives.
active mineral additives , composite Portland cement , grinding , heat treatment , hydration processes , strength
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Department of Silicate Technology and Metallurgy, M. Auezov South Kazakhstan University, Shymkent, 160012, Kazakhstan
Department of Chemical Technology of Composite and Binding Materials, D. Mendeleev University of Chemical Technology of Russia, Moscow, 125047, Russian Federation
Research Institute “Environmental Industrial Policy Centre”, Moscow, 115054, Russian Federation
Scientific Research Laboratory «Building Materials, Construction and Architecture», M. Auezov South Kazakhstan University, Shymkent, 160012, Kazakhstan
Administration Rector’s Office, K.I. Satpayev Kazakh National Research Technical University, Almaty, 050013, Kazakhstan
Centre for Scientific and Analytical Information, M. Auezov South Kazakhstan University, Shymkent, 160012, Kazakhstan
Department of Silicate Technology and Metallurgy
Department of Chemical Technology of Composite and Binding Materials
Research Institute “Environmental Industrial Policy Centre”
Scientific Research Laboratory «Building Materials
Administration Rector’s Office
Centre for Scientific and Analytical Information
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