Abstract
The interaction of Si anions with Al sites during the hydration process was observed by NMR, IR and SEM to understand the reaction mechanism of the hydrates formation mixed with oil shale calcined at different temperatures. As the reaction progressed, the coordination of Al (IV, V, and VI) changed almost completely to IV, when mixed with oil shale calcined at 700 °C. However, when mixed with oil shale calcined at 400 °C, some 6-coordination of Al still remained in the hydrates. Under the function of alkaline solutions, which were produced with the hydration of clinker, a certain amount of Si and Al atoms dissolved or hydrolyzed from aluminosilicate, formed geomonomers in solutions, and then polycondensed to form networks.
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Supported by the National Science and Technology (2006BAE03A11); the National Natural Science Foundation of China(50674062)
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Sun, Wb., Feng, Xp. & Zhao, Gx. Effect of distortion degree on the hydration of red mud base cementitious material. J Coal Sci Eng China 15, 88–93 (2009). https://doi.org/10.1007/s12404-009-0118-5
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DOI: https://doi.org/10.1007/s12404-009-0118-5