Synergistic Effect of CDWs as Eco-Pozzolans: Ternary Cements

Raquel Vigil de la Villa, Rosario García-Giménez, Moisés Frías, Sagrario Martínez Ramírez, Lucía Fernández-Carrasco, Eduardo Lahoz Ruiz, Jaime Moreno-Juez, Iñigo Vegas-Ramiro

Producción científica: Capítulo del libro/informe/acta de congresoContribución a la conferenciarevisión exhaustiva

Resumen

Sustainable development and circular economy policies currently prioritize the recovery of industrial waste and rubble as secondary raw materials. CDWs fine fractions of concrete nature are focusing special attention due to their accumulation, subjected to weather conditions and without any industrial application at present. These wastes have little pozzolanic activity which is why it is necessary to combine it with other active additions for the ternary cements manufacture. In the present, a laminar glass waste from the deconstruction has been selected in order to obtain the binary mix. A binary mixture of pozzolan recycled concrete/glass with a 1:2 ratio has been prepared to evaluate the synergy of both wastes in the pozzolanic reaction, and its possible commercialization for future ternary cements that are more sustainable. The characterization of materials and reaction kinetics mainly in the ternary pastes have been characterized by XRF, ICP/MS, NMR, FTIR, XRD-Rietveld and SEM/EDX, detecting calcite, quartz, mica, feldspar and clay minerals and as hydrated phases ettringite, aluminates and C-S-H gels. According to these results, it can be highlighted that from the scientific point of view, this mixture of pozzolans from CDWs are viable for use as ecoefficient pozzolans for the more sustainable ternary cements.

Idioma originalInglés
Título de la publicación alojadaRecent Advances in Concrete Technology and Sustainability Issues - Conference Proceedings, 15th International Conference
EditoresDenny Coffetti, Luigi Coppola, Terence Holland
EditorialAmerican Concrete Institute
Páginas485-494
Número de páginas10
ISBN (versión digital)9781641951845
EstadoPublicada - 1 jul 2022
Evento15th International Conference on Recent Advances in Concrete Technology and Sustainability Issues - Milan, Italia
Duración: 13 jul 202215 jul 2022

Serie de la publicación

NombreAmerican Concrete Institute, ACI Special Publication
VolumenSP-355
ISSN (versión impresa)0193-2527

Conferencia

Conferencia15th International Conference on Recent Advances in Concrete Technology and Sustainability Issues
País/TerritorioItalia
CiudadMilan
Período13/07/2215/07/22

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