Physicochemical Studies of Opoka as a Raw Material Component of Sodium Silicate Mixture for Subsequent Synthesis of Foam Glass Material Based on It
Zhakipbayev B. Kolesnikov A. Syrlybekkyzy S. Seidaliyeva L. Koishina A. Taizhanova L.
February 2025Multidisciplinary Digital Publishing Institute (MDPI)
Journal of Composites Science
2025#9Issue 2
The present article presents the results of physical and chemical studies of opoka. In particular, the opoka was subjected to chemical analysis, X-ray phase, differential thermal analysis, scanning microscopy, and X-ray energy dispersive elemental microanalysis. The opoka was studied with the aim of using it as an available raw material for obtaining a sodium silicate mixture and, in the future, developing an energy-saving technology for obtaining a building heat-insulating and sound-insulating foam glass material based on it, using synthesis. As a result of the studies, the chemical composition of the opoka was determined, which is 69–80% represented by silica. The elemental composition of the opoka was established, which is represented by 94.25% oxides of Si, Al, and Fe. The presence of such oxides makes it an ideal raw material component of a silicate-sodium mixture for the subsequent synthesis of foam glass material from it. Experimental exploratory studies on the synthesis of foam glass based on opoka have been carried out. The experimentally obtained sample of foam glass material consists of 93.37% Si, Al, Mg, and Na oxides, has a porous structure with a pore size of 2–5 microns, an average density of 375 kg/m3, thermal conductivity of 0.063 W/(m °C) at 25 °C, and noise absorption of 51.6 Db.
environment , foam glass , heat and sound insulation , life safety of the population , noise absorption , opoka , physical and chemical studies , raw material component , raw materials , sodium hydroxide
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Department of Science, Production and Innovation, M. Auezov South Kazakhstan University, Shymkent, 160012, Kazakhstan
Life Safety and Environmental Protection Department, M. Auezov South Kazakhstan University, Shymkent, 160012, Kazakhstan
Department of Ecology and Geology, Sh. Yessenov Caspian University of Technology and Engineering, Aktau, 130002, Kazakhstan
Department of Science
Life Safety and Environmental Protection Department
Department of Ecology and Geology
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