The Technology of Foam-Glass Building Materials for Heat-Insulating Purposes Using Amorphous-Silica Rocks
Zhakipbayev B.Y. Zhakiyev N.K. Abdikadyr B.Z. Moldamuratov Z.N. Abekov K.O.
2025Engineered Science Publisher
ES Materials and Manufacturing
2025#27
Amorphous-silica rocks are valuable sources of SiO2 and contain alumina, alkali, and alkaline earth oxides, reducing costs and raw material needs. This study investigates glassed amorphous-silica rocks for foam-glass building materials. Using X-ray phase and electron microscopy, the glassed opoks from the Turkestan-Urangai deposit in Kazakhstan were analyzed to determine their chemical and mineral composition as well as structural properties. Key thermal properties and reactivity patterns of amorphous-silica raw materials were identified. The firing temperature of opok-based charges is lower than that of quartz sand due to the weaker bonding energy of ≡Si-O-Si≡ and a higher proportion of ≡Si-OH bonds in opoks, facilitating layered structure formation at reduced temperatures. The temperature-time regime for foaming opoks materials was experimentally established, and technological factors lowering heat treatment temperatures were identified. Silicate formation processes and the phase composition and structure of foam glass were studied. Parameters for producing foam glass directly from natural silica were determined, and the resulting material’s physical and technical properties were evaluated. Thermodynamic modeling of silicate formation, based on the principle of maximum entropy, demonstrated energy-efficient technology for heat-insulating foam glass.
Amorphous-silica rocks , Foam glass building materials , Grinding , Heat treatment , Heat-insulating foam glass , Sodium silicate mixture , Specific surface
Text of the article Перейти на текст статьи
Department of Scientific Projects and Programs, M. Auezov South Kazakhstan University, Tauke Khan Avenue, 5, Shymkent, 160012, Kazakhstan
Department of Science and Innovation, Astana IT University, Mangilik Yel Avenue, 55/11, Astana, 010000, Kazakhstan
Department of Physics, Faculty of Physics and Mathematics, Zhanibekov University, A. Baitursynov Street 13, Shymkent, 160012, Kazakhstan
Faculty of General Construction, International Educational Corporation, Ryskulbekov Street 28, Almaty, 050043, Kazakhstan
Higher School of Advanced Digital Technologies of Peter the Great, St. Petersburg Polytechnic University, St. Petersburg, 195251, Russian Federation
Department of Industrial, Civil and Road Construction, Faculty of Architecture, Construction and Transport, M. Auezov South Kazakhstan University, Tauke khan avenue, 5, Shymkent, 160012, Kazakhstan
Department of Scientific Projects and Programs
Department of Science and Innovation
Department of Physics
Faculty of General Construction
Higher School of Advanced Digital Technologies of Peter the Great
Department of Industrial
10 лет помогаем публиковать статьи Международный издатель
Книга Публикация научной статьи Волощук 2026 Book Publication of a scientific article 2026