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Erschienen in:
2020 | OriginalPaper | Buchkapitel
Comparison of Brick Clays and a Kaolinitic Clay Regarding Calcination and Performance in Blended Cement Mortars
verfasst von : Nsesheye Susan Msinjili, Patrick Sturm, Hans-Carsten Kühne, Gregor J. G. Gluth
Erschienen in: Calcined Clays for Sustainable Concrete
Verlag: Springer Singapore
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Abstract
Two brick clays (rich in 2:1 clay minerals) and a low-grade kaolinitic clay were studied regarding their transformations during calcination and their performance in blended cement mortars. The mortars with calcined clays exhibited decreased workability (slump flow), but this effect could be mitigated by employment of a conventional superplasticizer; however, compressive strength of the hardened mortar was lowered in some cases. While the kaolinitic clay generally yielded the highest strength, the performance of a brick clay could be increased by grinding to higher fineness and by mixing it with the kaolinitic clay.