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- Title
Valorization of natural stone sawing waste as a functional additive in ceramic tile production.
- Authors
Akpınar, Süleyman; Anlı, Seher Taş
- Abstract
The worse situation in the global economy due to the COVID-19 pandemic disease and the Russia–Ukraine war caused problems in the supply of raw materials such as Ukrainian clay, which is at the top of the global demand, and brought the Turkish ceramics industry to the brink of a severe crisis. For this reason, ceramic manufacturers in Turkey have sought alternative raw materials and additives to meet especially the needs of the domestic market. This research aimed to evaluate natural stone-cutting wastes as a functional additive in industrial ceramic tile production. For this purpose, a part of illitic clay (IC) in the floor tile formulation was replaced with tuff waste (TW) in varying amounts (up to 18 wt.%). The floor tile compositions prepared with different percentages of TW substitution were pressed uniaxially at 200 kg/cm2, and the green ceramic bodies were then fired at 1186 °C for 46 min in an industrial roller kiln. The development of the microstructure was followed by XRD and SEM analysis. The technological properties (linear shrinkage, water absorption, green, and fired strength) were investigated as a function of the waste addition. The results revealed that the gradual substitution of clay with tuff waste accelerated liquid-phase formation and, thus, sintering progress, resulting in denser microstructure. The technological properties were found to be influenced by the waste addition. The replacement of IC with TW produced a noticeable change in the quality of the floor tiles, contributing to an increase of up to 24% and 46% in the green and fired strength, respectively. It was also found that replacing the clay in the industrial tile composition with 7 wt.% tuff waste allowed the production of enhanced floor tiles having the highest green (1.55 MPa) and fired (27.3 MPa) strength and the lowest water absorption value (0.51%).
- Subjects
UKRAINE; TURKEY; RUSSIA; CERAMIC tiles; CERAMICS; TILE flooring; FLOOR tiles; RUSSIAN invasion of Ukraine, 2022-; RAW materials
- Publication
Journal of Material Cycles & Waste Management, 2023, Vol 25, Issue 6, p3844
- ISSN
1438-4957
- Publication type
Article
- DOI
10.1007/s10163-023-01813-6