The development and assessment of alkali activated paving blocksFrankovič, Ana (Avtor) Ducman, Vilma (Avtor) Kriskova, Lubica (Avtor) Tatsis, Efthymios (Avtor) Petrica, Petrica (Avtor) Pontikes, Yiannis (Avtor) slagsalkali activated paverspropertiesIn recent years great attention has been placed by the building sector on alkali-activated technology based on metakaolin, fly ash and ground granulated blast furnace slag (GGBFS), but also on emerging precursors such as by-products from non-ferrous metallurgy. The present work focuses on the development of alkali-activated binders from two slags, one from primary and one from secondary copper production, which were finely milled, blended with GGBFS, and activated with K-based alkali silicate solution with a 1.7 SiO2/K2O molar ratio. The aggregate to paste mass ratio was 2. The mixtures were cast, and cured for a designated time at room temperature and 60% RH. The so-obtained paving blocks were then tested in accordance with European standard for concrete paving blocks. The following properties were measured: splitting tensile strength, abrasion resistance, slip and skid resistance, resistance to freeze-thaw and resistance to freeze-thaw in the presence of de-icing salts. Their properties were compared to those of commercially available concrete paving blocks, and it was found that the performance of the alkali-activated pavers was generally comparable with the concrete pavers, while certain properties (e.g., abrasion resistance, freeze-thaw resistance and freeze-thaw resistance in presence of de-icing salts) were considerably better.University of Maribor, University Press, Faculty of Chemistry and Chemical Engineering20222023-12-21 08:17:45Neznano17624UDK: 620.1/.2COBISS_ID: 111156739OceCobissID: 109396739sl© Authors & Potrč, Bogataj, Kravanja, Novak Pintarič, 2022