Una contribución a la economía circular: cenizas volantes de incineración de residuos sólidos urbanos para producir aglutinantes ecológicos = A contribution to the circular economy: municipal solid waste incineration fly ash to produce eco-friendly binder

Municipal solid waste is one of the most pressing environmental problems the world faces. Nowadays, incineration is considered to be the most effective technology for treating it. However, after the incineration process, close to 25% of the initial total mass of waste is ash, which has to be placed of in landfills. Recent trends suggest that further progress in resource efficiency is possible by turning waste into a resource and thus closing the loop in a circular economy. Fly ash can be utilized as a substitute for natural resources in construction, as in aggregates or in the manufacture of new materials. In particular, these fly ashes contain elements such as Ca, Si and Al, which make it possible for them to be used as a raw material to manufacture binders. In the present work, the results obtained from the physicochemical characterization of fly ashes will be presented. The research aims to explore the feasibility of using this fly ash as raw material in the manufacture of eco-friendly binders.