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Erschienen in:
2020 | OriginalPaper | Buchkapitel
Influence of Kaolinite Content, Limestone Particle Size and Mixture Design on Early-Age Properties of Limestone Calcined Clay Cements (LC3)
verfasst von : Franco Zunino, Karen L. Scrivener
Erschienen in: Calcined Clays for Sustainable Concrete
Verlag: Springer Singapore
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Abstract
This study explores the effect of kaolinite content from 20 to 95% on porosity refinement and mechanical properties of LC3-50 and LC3-65 (50% and 65% clinker factor, respectively) systems by dilution of pure metakaolin.
The effect of metakaolin dilution was coupled with other factors that were observed to have a significant impact on hydration kinetics and strength. The effect of limestone particle size was studied in terms of packing optimization and workability enhancement. A detailed comparison between LC3-50 and LC3-65, currently allowed in the European standard, is provided showing that the main difference in mechanical properties occurs at 1 d for an equivalent kaolinite content. Finally, guidelines for effective and optimized utilization of clays of different grades (kaolinite contents) in LC3 systems are given.