The possibility of using wastes from the production of mineral wool (MB) and nepheline-syenite (NS) in the production of ceramics in order to improve the physical and mechanical properties of the samples, as well as their frost resistance has been investigated. The use of NS in the amount of 5 - 15 & # 37; increases the compressive strength of the samples to 17 & # 37; and reduces the density, water absorption and ultrasound speed in the samples to 5.2, 12.5 and 7 & # 37; after firing at a temperature of 1060 & # 176; C. An increase in the number of NS due to an increase in the number of pores, the diameter of which is 0.02 - 0.1 ?m in the samples, contributes to less destruction of the samples during the freeze-thaw process.
Dr. Tech. Sciences I. PRANTSKEVICIENE (This email address is being protected from spambots. You need JavaScript enabled to view it.), Dr. sciences I. PUNDIENE (This email address is being protected from spambots. You need JavaScript enabled to view it.), Dr. Sciences A. KREMENSAS (This email address is being protected from spambots. You need JavaScript enabled to view it.); Institute of Building Materials, Faculty of Civil Engineering, Vilnius Technical University Gediminas (VGTU) (Lithuania, Vilnius)
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