Authors: Zhang, S.; Hashimoto, S.; Lee, W.E.

Source: British Ceramic Transactions, Volume 103, Number 4, August 2004 , pp. 190-192(3)

Publisher: Maney Publishing

Abstract:

The addition of small amounts (0.25 wt-%) of calcium aluminate cement (CAC) to water greatly accelerates the hydration of Al powder. This behaviour is attributable to the increased basicity of the solution owing to the CAC leading to dissolution of the native Al₂O₃ film and early hydration products, as well as additional heat released by the accelerated hydration of Al and CAC. The significance of this for the use of Al powder in CAC bonded refractory castables is discussed.

Keywords: HYDRATION; ALUMINIUM POWDER; CALCIUM ALUMINATE CEMENT; REFRACTORY CASTABLES

Document Type: Short Communication

DOI: http://dx.doi.org/10.1179/096797804225018723

Publication date: 2004-08-01

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