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Erschienen in:
2018 | OriginalPaper | Buchkapitel
Structural Ordering of Aged and Hydrothermally Cured Metakaolin Based Potassium Geopolymers
verfasst von : Xinyuan Ke, John L. Provis, Susan A. Bernal
Erschienen in: Calcined Clays for Sustainable Concrete
Verlag: Springer Netherlands
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Abstract
This study evaluates the potential correlation between natural aging and hydrothermal curing (accelerated aging), related to the crystallisation of zeolites in potassium-based metakaolin geopolymer binders. 7-year old sealed-cured specimens, formulated with varying silicate contents, were evaluated. The effect of different accelerated aging durations on the mineralogy of these potassium-based geopolymers was also assessed. The results show that although zeolite formation is favoured under both natural and accelerated aging in potassium-based geopolymers, different types of zeolites are formed depending on the silicate content added to the mix, and the curing conditions of the specimens.