Thermal characterisation of autoclaved cement made with alumina-silica rich industrial waste

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Journal Article
Journal of Thermal Analysis and Calorimetry, 2006, 84 (2), pp. 521 - 525
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The hydration products of hydrothermally cured OPC-quartz blends incorporating clay-brick waste were characterised using simultaneous DTA-TG, XRD and SEM. The exotherm above 800°C on the DTA curve, due to the formation of β-wollastonite (β-CS) was related to the compressive strength. The area and/or height of the exotherm increased with compressive strength and was due primarily to the presence of calcium silicate hydrate phases including 1.1 nm tobermorite. Supporting evidence is provided by XRD and SEM. © 2006 Akadémiai Kiadó.
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