case studies on bauxite residue and steel slag pavement tiles
Lubica Kriskova (Avtor), Vilma Ducman (Avtor), Mojca Loncnar (Avtor), Anže Tesovnik (Avtor), Gorazd Žibret (Avtor), Dimitra Skentzou (Avtor), Christos Georgopoulos (Avtor)

Povzetek

This research aimed to investigate the potential of using alkali activation technology to valorize steel slag and bauxite residue for the production of high-performance pavement blocks. By utilizing these industrial by-products, the study seeks to reduce their environmental impact and support the development of sustainable construction materials. Lab-scale testing showed that bauxite pavers showed a decrease in mechanical strength with increasing replacement of ordinary Portland cement. Partial replacement up to 20% still exceeded 30 MPa in compressive strength. Steel slag-based pavers achieved the 30 MPa threshold required for the application with selected mix designs. Pilot-scale production-optimized formulations and standards testing, including freeze–thaw resistance, confirmed the technical viability of these products. Life cycle analysis indicated a 25–27% reduction in CO2 emissions for slag-based tiles compared to traditional concrete tiles. Moreover, using industrial residue reduced mineral resource depletion. This study examined the properties of the resulting alkali-activated binders, their ecological benefits, and their performance compared to conventional materials. Through a comprehensive analysis of these applications, our research promotes the circular economy and the advancement of sustainable construction products.

Ključne besede

alkalijsko aktivirani materiali;gradbeni materiali;boksitni ostanek;žlindra;jeklarska žlindra;tlakovci;alkali-activated materials;building materials;bauxite residue;steel slag;pavers;

Podatki

Jezik: Angleški jezik
Leto izida:
Tipologija: 1.01 - Izvirni znanstveni članek
Organizacija: GeoZS - Geološki zavod Slovenije
Založnik: Molecular Diversity Preservation International
UDK: 620.1/.2
COBISS: 222369539 Povezava se bo odprla v novem oknu
ISSN: 1996-1944
Št. ogledov: 25
Št. prenosov: 8
Ocena: 0 (0 glasov)
Metapodatki: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Ostali podatki

Sekundarni jezik: Slovenski jezik
Sekundarne ključne besede: alkalijsko aktivirani materiali;gradbeni materiali;boksitni ostanek;žlindra;alkalijsko aktivirani materiali;gradbeni materiali;boksitni ostanek;jeklarska žlindra;tlakovci;
Strani: 1-18 str.
Letnik: ǂVol. ǂ18
Zvezek: ǂiss. ǂ2, [article no.] 257
Čas izdaje: 2025
DOI: 10.3390/ma18020257
ID: 25739217