Most low-melting (brick tile) clays found in the Russian Federation are classified as semi-acidic and acidic, non-caking, with a high content of coloring oxides (Fe2O3> 3%) and a low content of aluminum oxide (12 – 15%). Therefore, bricks of grade M150 or higher cannot be obtained from these clay components, given their low aluminum oxide content. Ceramic bricks of grades M150 – M300 are required for the construction of load-bearing walls of the lower floors of high-rise buildings (ten floors and higher). In this work, a ceramic earthquake-resistant brick was obtained based on waste of combustible shale, namely, intershale clay used as a clay component, and aluminum-containing slag from the production of metallic chromium. Earthquake-resistant brick, fired in the range of 1050 – 1100°C, had a grades M150 – 175. Studies of the phase composition of ceramic brick samples have shown that mullite is formed in the samples when fired at 1100°C.
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Translated from Novye Ogneupory, No. 4, pp. 53 – 57, April, 2021.
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Abdrakhimov, V.Z., Abdrakhimova, E.S. Earthquake-Resistant Brick Based on Intershale Clay and Aluminum-Containing Slag of Metallic Chrome Production. Refract Ind Ceram 62, 226–230 (2021). https://doi.org/10.1007/s11148-021-00587-4
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DOI: https://doi.org/10.1007/s11148-021-00587-4