20.500.12556/DiRROS-29404 The influence of processed steel slag additive on brick-making clay As clay deposits become scarce, the brick industry is increasingly seeking additives or substitutes. This study investigates a high- plasticity clay that requires an opening agent, for which was used 10 wt.% of processed steel slag Ekominit S1. Ceramic- technological tests were performed to determine the compressive strength, density and porosity. The addition of Ekominit S1 increased the total porosity by 5% in samples fired at 950 °C, and by 4% in samples fired at 1050 °C, while the compressive strength decreased by 36% in the samples fired at 950 °C and by 38% in those fired at 1050 °C compared to the reference material. Although the mechanical properties were lower than those of the reference, the benefit is reduced shrinkage. The processed steel slag could be incorporated successfully into bricks, which would also reduce the environmental impact of this sector by using secondary products instead of virgin materials. clay bricks clay bricks compressive strength porosity opening agent steel slag glinene opeke tlačna trdnost sredstvo za odpiranje por poroznost jeklarska žlindra true false true University of Maribor, University of Maribor Press, University of Maribor, Faculty of Chemistry and Chemical Engineering Angleški jezik Slovenski jezik © authors of proceedings and Potrč, Bogataj, Kravanja, Novak Pintarič (editors) Neznano 2026-05-15 13:20:33 2026-05-15 13:23:12 2026-05-16 03:49:12 0000-00-00 00:00:00 2026 0 0 Str. 55-67 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2026-04-21 620.1/.2 10.18690/um.fkkt.1.2026.5 276527363 272982019 https://press.um.si/index.php/ump/sl/catalog/book/1108/chapter/1129 1 1942f717-5050-11f1-8a5a-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=44071 RAZ_Loncnar_Mojca_2026.pdf RAZ_Loncnar_Mojca_2026.pdf 1 FA774A9CCB8B4BE7223587384BBCBBEB c78ed1f77f52e9b4ed9d4305fc97c1651a0e42f70741ac6d0e90d59e7b15df63 707a002c-5050-11f1-8a5a-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=44072 Zavod za gradbeništvo Slovenije 0 0 0