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Sara Goñi
Sara Goñi
Institute of Construction Science “Eduardo Torroja” (CSIC), C/Serrano Galvache, 4, 28033 Madrid, Spain
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Ana Guerrero
Ana Guerrero
Institute of Construction Science “Eduardo Torroja” (CSIC), C/Serrano Galvache, 4, 28033 Madrid, Spain
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Abstract
The effect of alkaline hydrothermal activation of class-C fly ash belite cement was studied using thermal analysis (TG/DTG) by determining the increase in the combined water during a period of hydration of 180 days. The results were compared with those obtained for a belite cement hydrothermally activated in water. The two belite cements were fabricated via the hydrothermal-calcination route of class-C fly ash in 1 M NaOH solution (FABC-2-N) or demineralised water (FABC-2-W). From the results, the effect of the alkaline hydrothermal activation of belite cement (FABC-2-N) was clearly differentiated, mainly at early ages of hydration, for which the increase in the combined water was markedly higher than that of the belite cement that was hydrothermally activated in water. Important direct quantitative correlations were obtained among physicochemical parameters, such as the combined water, the BET surface area, the volume of nano-pores, and macro structural engineering properties such as the compressive mechanical strength.
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| Journal of Thermal Analysis and Calorimetry | |
|---|---|
| Language | English |
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1969 |
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