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Aspects of the pore solution chemistry of hydrated cement pastes containing metakaolin

Aspects of the pore solution chemistry of hydrated cement pastes containing metakaolin

Coleman, N.J. and Page, C.L. (1998) Aspects of the pore solution chemistry of hydrated cement pastes containing metakaolin. Cement and Concrete Research, 27 (1). pp. 147-154. ISSN 0008-8846 (doi:10.1016/S0008-8846(96)00184-6)

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Abstract

The hydroxide ion concentrations of expressed pore solutions of Ordinary Portland cement pastes containing 0, 10 and 20% of metakaolin by weight of cement were determined at various stages of hydration. Effects produced by two types of metakaolin, differing in degree of purity, were compared and, in each case, incorporation of metakaolin into the pastes was found to cause a long-term reduction in pore solution hydroxide ion concentration. The presence of metakaolin was also found to result in an increase in the extent to which chloride ions, introduced via the mix water, were excluded from the pore solution phase. The significance of these results in relation to the ability of hydrated cement matrices containing metakaolin to provide corrosion protection to embedded steel is considered. Copyright (C) 1997 Elsevier Science Ltd.

Item Type: Article
Uncontrolled Keywords: metakaolin, Portland cement
Subjects: Q Science > QD Chemistry
T Technology > TA Engineering (General). Civil engineering (General)
Faculty / Department / Research Group: Faculty of Engineering & Science > Department of Pharmaceutical, Chemical & Environmental Sciences
Related URLs:
Last Modified: 17 Oct 2016 09:12
Selected for GREAT 2016: None
Selected for GREAT 2017: None
Selected for GREAT 2018: None
URI: http://gala.gre.ac.uk/id/eprint/11806

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