Effect of Elemental Al in MSWI ash when used as a Supplementary Cementitious Material

Several controversy concerning the management of MSW (Municipal Solid Waste) and their environmental issues. To reduce the volume of waste about 70-90% the process used is the incineration. However, the material resulting from the plant are produced by an uncontrolled process, therefore they have hazardous chemical composition. To replace MSWI as the raw material in concrete, they should be treated with different process. In this research the ashes (from INDAVER) were treated with water, NaOH and Carbonate and after submitted to the compress strength test, TGA (Termogravimetric Analysis) and ASR (Alkali-Silica Reaction, with glasses aggregate) to evaluate the quality. Relevant the role of the Elemental Al, for this analysis new set up was realize. Results conduced that the MSWI was appropriate to replace raw materials in concrete after treatments.