Autoclaved lime-colloidal silica slurries and formation of Al-tobermorite

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Journal Article
Journal of the Australian Ceramic Society, 2007, 43 (2), pp. 150 - 153
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Fired clay-brick waste has been the focus of research for utilisation in the hydrothermally treated CaO-Al2O3- SiO2-H2O system. Autoclaved lime-colloidal silica slurries with increasing additions of mullite, the main aluminous source in fired clay-brick were investigated. The effects of the reactivity of this alumina source on the formation and nature of Al-tobermorite were studied from a combination of solid-state 27Al MAS NMR, XRD, DTA-TGA and SEM.
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