Abstract
Municipal solid waste incineration (MSWI) fly ash is considered as hazardous waste having its own high concentration of heavy metals, inorganic salts and the presence of chlorinated organic compounds, such as PCDD/F. The aim of this study was to minimize the hazardous chemicals and heavy metals to usefully apply MSWI fly ash as a Supplementary Cementitious Material (SCM). Here in this work we apply non additive thermal treatment of MSWI fly ash up to 1000°C temperature. The physical and chemical characteristics of MSWI fly ash were first analyzed to introduce them into the concrete. A quantitative mineralogical composition of the ash was determined. The performance characteristics (setting times, compressive strengths) for mortars containing treated ash were studied. These promising results indicate that non additive thermal treatment process is quite effective and reliable for recycling of MSWI fly ashes.
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