Use of coal mining waste as pozzolanic material in new blended cement matrixes

R. Vigil De La Villa, R. García*, M. Ramírez, V. Rubio, M. Frías, O. Rodríguez, E. Lahoz, S. Martínez-Ramirez, L. Fernández-Carrasco, I. Vegas

*Autor correspondiente de este trabajo

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

2 Citas (Scopus)

Resumen

Research and eco-innovation geared to obtain alternative sources of raw materials from waste constitute pathways for enhancing the competitiveness of resource-intensive industries. Cement and concrete manufacture calls for new sources of new, highly pozzolanic products to improve the mechanical properties and durability of the resulting matrices, while at the same time reducing production costs and environmental impact. Spanish coal mining wastes generated in the extraction and washing steps from a mine in the Castilla-León region were investigated. Mineralogically, these wastes are composed by kaolinite (20-30%), illite (45-70%) and quartz (5-15). This composition is very interesting in order to activate, by controlled thermal activation, the present kaolinite that generates metakaolin, a highly pozzolanic product. Morphological, textural and microstructural changes affect the activity and reactivity of activated wastes. These first studies open up a new research line, practically unknown to the international research community, and stand out the important economic and environmental benefits associated with the recycling of these wastes as supplementary cementing materials for future commercial blended cements.

Idioma originalInglés
Título de la publicación alojada16th European Conference on Composite Materials, ECCM 2014
EditorialEuropean Conference on Composite Materials, ECCM
ISBN (versión digital)9780000000002
EstadoPublicada - 2014
Evento16th European Conference on Composite Materials, ECCM 2014 - Seville, Espana
Duración: 22 jun 201426 jun 2014

Serie de la publicación

Nombre16th European Conference on Composite Materials, ECCM 2014

Conferencia

Conferencia16th European Conference on Composite Materials, ECCM 2014
País/TerritorioEspana
CiudadSeville
Período22/06/1426/06/14

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