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Orlova M.E.

Assistant of Construction Materials Department , Don State Technical University

Special features of obtaining a high-strength ceramic body based on modified argillites

https://doi.org/10.58224/2618-7183-2026-9-3-2
Abstract
After studying construction market trends over the past year, a rapid decline in ceramic materials production was revealed. According to Rosstat, construction materials output fell by 8.6% in September 2025 compared to the same month last year. Regarding the ceramic materials market, a decline was observed in the ceramic brick, stone, and tile production segment. Production of construction bricks decreased by 3.8%, ceramic stone by 4.8%, and ceramic facade tiles by 3.1%. Furthermore, clinker roofing tiles, large-format ceramic tiles, and siding are unavailable on the market, as imports of these products are limited and domestic production is nonexistent. Many ceramic material manufacturers are prepared to be modernized to support import substitution, thereby reducing the shortage in the construction industry. The primary challenge currently is to find raw materials suitable for the production of high-strength ceramic products. Argillites, which are widely distributed throughout the Russian Federation, could serve as such raw material. The main deposits of this raw material are located in the Southern and North Caucasian Federal Districts.
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Properties of Verkhnealkunsky deposit mudstones used as raw materials to manufacture clinker tiles

https://doi.org/10.58224/2618-7183-2024-7-3-7
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Abstract
The article writes about the development of mudstone-based raw material compositions used to manufacture clinker tiles with improved physical and technical properties. Clinker tiles are one of the popular roofing materials. Compared to other roofing covering options, clinker tiles have higher strength, more resistance to aggressive environments, and better aesthetic characteristics. Clinker tile production is relevant due to the fact that currently architects and building constructors are showing great interest in such an elite roofing material, but due to the economic situation, this roofing material is no longer imported to Russia, with an empty market niche having been formed. Many Russian brick factories are planning to install additional technological lines to manufacture ceramic tiles, but the current demand is to produce clinker tiles. The main unresolved issue concerns raw materials since traditional raw materials – loams and clays – are very rarely suitable for the production of low-temperature sintering clinker tiles. Having studied a large amount of academic literature and carried out the necessary laboratory studies, the authors of this article, under the guidance of the Chair of the Construction Materials Department, Prof. V.D. Kotlyar, pay serious attention to such raw materials as mudstones from the Verkhnealkunsky deposit of the Russian Republic of Ingushetia. The article provides a general description of mudstones, including their chemical and mineral composition as well as their structural features for the production of clinker tiles. It has been experimentally established that the degree of their grinding has a significant influence on technological properties of both mudstones and the end products. Based on raw material mixtures with a grain composition of 0-0.16 and 0-0.08 mm, it is possible to manufacture clinker tiles using the extrusion molding method without introducing corrective additives. The data obtained will make it possible to develop technological regulations to manufacture clinker tiles based on Verkhnealkunsky deposit mudstones.
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