Hydration behaviour of a lime-pozzolan cement containing MSW incinerator fly ash |
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Authors: | P Ubbriaco |
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Institution: | (1) Institute of Applied Chemistry, Polytechnic of Bari, 70125 Bari, Italy |
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Abstract: | A lime-pozzolan cement was used to make pastes containing different quantities of MSW fly ash. After setting, the pastes were cured in water at room temperature from 1 h to 260 days. The hydration characteristics and the nature of the hydration products of the various pastes were studied by simultaneous TG/DSC thermal analysis and X-ray diffractometry. The MSW fly ash was found to induce a slowing of the hydration process in lime-pozzolan pastes, and after some days an evident acceleration of hydration reactions occurred. Sulphate and chloride in the MSW fly ash yield hydration products forming a cementitious matrix.The author is grateful to D. Calabrese for assistance with the thermal and XRD analyses. |
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Keywords: | lime MSW fly ash natural pozzolan TG/DSC XRD |
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