Alkali-Activated Mine Tailings and Solid Wastes as Precursors for Geopolymers

Vista sencilla de ítem
dc.contributor.authorTatiana Samarina
dc.contributor.authorArturo Reyes
dc.contributor.authorMaría Victoria Letelier
dc.contributor.authorDaniza Castillo Godoy
dc.contributor.authorYimmy Silva Urrego
dc.contributor.authorJacqueline Cuevas
dc.contributor.authorEsther Takaluoma
dc.date.accessioned2026-03-17T15:51:30Z
dc.date.available2026-03-17T15:51:30Z
dc.date.issued2024
dc.description.abstractFormer mining activities may pose a threat to the environment if not being handled correctly due to neglecting proper conservation methods at the time of mine closure. While dumping is the most common way of disposing of solid industrial waste such as tailings, fly and bottom ashes, slags etc., those materials are in fact a valuable source of secondary raw minerals. Thus, they could be recycled in a variety of products to turn the waste streams into value via the promising geopolymerisation technology. This article presents a study on the conversion of mine tailings and industrial by-products into geopolymers. Geopolymers based on alumino-silicate fines (steel-making slags and mine tailings) were synthesized using alkaline activation comprising sodium silicate. While the hardening of compositions occurs slowly at ambient temperature, elevated temperatures could change the leaching behaviour and decrease copper release from geopolymer matrix. Compressive strength of the proposed composition was 49±2 MPa after 90 days of curing. The results provide insights of possible reduction of the environmental footprints and potential economic benefits of mine tailings-based geopolymer composites for building applications utilizing mine tailings as suitable concrete material.
dc.description.sponsorshipFONDEF/ANID 2021 + ID21I10322 MINEDUC-UA ANT 1999
dc.identifier.doi10.11159/icceia24.161
dc.identifier.issn23698128
dc.identifier.urihttps://repositorioabierto.uantof.cl/handle/uantof/666
dc.language.isoen
dc.sourceProceedings of the World Congress on New Technologies
dc.titleAlkali-Activated Mine Tailings and Solid Wastes as Precursors for Geopolymers
dc.typeArticle
organization.identifier.rorUniversidad de Antofagasta
uantof.identificator.departmentDepartamento de Ingeniería en Minas
Archivos
Bloque original
Mostrando 1 - 1 de 1
Miniatura
Nombre:
ICCEIA_161.pdf
Tamaño:
338.08 KB
Formato:
Adobe Portable Document Format
Descargar
Bloque de licencias
Mostrando 1 - 1 de 1
No hay miniatura disponible
Nombre:
license.txt
Tamaño:
1.71 KB
Formato:
Item-specific license agreed to upon submission
Descripción:
Descargar
Colecciones
Departamento de Ingeniería en minas