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Article

Influence of Glass Additions on Illitic Clay Ceramics

1
Rudolfs Cimdins Riga Biomaterials Innovations and Development Centre of RTU, Institute of General Chemical Engineering, Faculty of Materials Science and Applied Chemistry, Riga Technical University, 3 Pulka Str., LV-1007 Riga, Latvia
2
Department of Environmental Science, Faculty of Geography and Earth Sciences, University of Latvia, LV-1004 Riga, Latvia
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Scientific Laboratory of Powder Materials, Faculty of Civil Engineering, Riga Technical University, 6A Kipsalas Str., room 110, LV-1048 Riga, Latvia
4
Institute of Plasma Physics, The Czech Academy of Sciences, Za Slovankou 3, 18200 Prague 82, Czech Republic
5
Department of Physics, Constantine the Philosopher University, A. Hlinku 1, 94974 Nitra, Slovakia
*
Author to whom correspondence should be addressed.
Materials 2020, 13(3), 596; https://doi.org/10.3390/ma13030596
Received: 14 November 2019 / Revised: 21 January 2020 / Accepted: 23 January 2020 / Published: 28 January 2020
(This article belongs to the Special Issue Ceramics and Construction Materials)
A mixture of an illitic clay and waste glass was prepared and studied during the sintering process. The illitic clay, from the Liepa deposit (Latvia), and green glass waste (GW) were disintegrated to obtain a homogeneous mixture. The addition of disintegrated GW (5–15 wt% in the mixture) led to a reduction in the intensive sintering temperature, from 900 to 860 °C, due to a significant decrease in the glass viscosity. The addition of GW slightly decreased the intensities of the endo- and exothermic reactions in the temperature range from 20 to 1000 °C due to the reduced concentration of clay minerals. GW reduced the plasticity of the clay and reduced the risk of structural breakage. The increase in sintering temperature from 700 to 1000 °C decreased the apparent porosity and water uptake capacity of the ceramics from 35% and 22%, down to 24% and 13%, respectively. The apparent porosities of all the sintered mixtures showed a decrease of between 6% to 9% after the addition of GW with concentrations from 5 up to 15 wt% respectively, while the water uptake capacities decreased from between 4% and 10%. The addition of GW led to an increase in the apparent density of the ceramic materials, up to 2.2 g/cm3. Furthermore, the compressive strength increased by more than two times, reaching a highest value of 240 MPa after the sintering of the 15 wt% GW-containing mixture at 1000 °C. View Full-Text
Keywords: clay; illite; glass; waste glass; ceramics; specific strength; compressive strength clay; illite; glass; waste glass; ceramics; specific strength; compressive strength
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MDPI and ACS Style

Shishkin, A.; Baronins, J.; Mironovs, V.; Lukáč, F.; Štubňa, I.; Ozolins, J. Influence of Glass Additions on Illitic Clay Ceramics. Materials 2020, 13, 596. https://doi.org/10.3390/ma13030596

AMA Style

Shishkin A, Baronins J, Mironovs V, Lukáč F, Štubňa I, Ozolins J. Influence of Glass Additions on Illitic Clay Ceramics. Materials. 2020; 13(3):596. https://doi.org/10.3390/ma13030596

Chicago/Turabian Style

Shishkin, Andrei, Janis Baronins, Viktors Mironovs, František Lukáč, Igor Štubňa, and Jurijs Ozolins. 2020. "Influence of Glass Additions on Illitic Clay Ceramics" Materials 13, no. 3: 596. https://doi.org/10.3390/ma13030596

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