A. Guerrero, S. Goñi, A. Macías, E. Fernández, M. Lorenzo
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Influence of Synthesis Temperature on the Hydration of New Cements from Fly Ash of Municipal Solid Waste Incineration
The influence of the synthesis temperature on the hydration reaction of new cements obtained from municipal solid waste incineration fly ash (MSWIFA), as a secondary raw material, is discussed in this work. Cements were synthesized in a range of temperature between 700 degrees C and 1400 degrees C from MSWIFA, which was previously activated by hydrothermal treatment at 200 degrees C and 1.24 MPa. The evolution of cemented phases with the heating temperature was followed by X-ray diffraction (XRD) and infrared spectrometry (IR). The results were compared with those obtained by heating the starting fly ash without hydrothermal treatment. The degree of hydration was semi-quantitatively evaluated by XRD, during a period of 28 days, in cements obtained at low temperatures (700 degrees C, 800 degrees C, 900 degrees C, 1000 degrees C and 1100 degrees C).
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