Accelerated industrial development, mass production, economic viability, and environmental sustainability impose new requirements on contemporary materials, positioning basalt as a promising, cost-effective, and abundant environmentally benign raw material. This study explores the influence of sintering temperature on the physical properties of ceramics obtained from andesite basalt aggregate. Relative density, shrinkage, and color changes were monitored to optimize the sintering temperature for the serial production of high-density ceramics. Varying the sintering temperature by 10 °C within the 1040–1080 °C range, while maintaining a constant sintering time of 60 min, leads to significant changes in relative density, shrinkage, and color. Beyond visual appearance, color changes can be quantified with coordinates in color spaces, usually in the CIELAB color space, standardized by the Commission Internationale de l’Eclairage (CIE). The best physical properties were achieved at a sintering temperature of 1060 °C for 60 min with a relative density of 99.501%, shrinkage of 12.811%, and color coordinates L*(32.03), a*(9.25), and b*(7.58) according to the CIELAB analysis. The favorable physical properties and distinctive reddish-brown color of sintered andesite basalt ceramics make them promising for floor and wall tile applications.
Maksimović et al. (Wed,) studied this question.
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