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2024 | OriginalPaper | Chapter

7. General Remarks

Author : Alaa M. Rashad

Published in: Metakaolin Effect on Geopolymers’ Properties

Publisher: Springer Nature Switzerland

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Abstract

This chapter delves into the multifaceted effects of metakaolin (MK) on geopolymers, highlighting its impact on workability, setting time, density, porosity, and strength. The introduction of MK can either enhance or diminish these properties, depending on factors such as precursor type, MK amount, and activator type. Notably, MK tends to decelerate setting time and reduce autogenous and drying shrinkage across various precursors. While its influence on compressive strength is mixed, with both positive and negative effects reported, MK generally improves flexural strength by mitigating microcracks and refining pore structure. Additionally, the chapter discusses the role of MK in enhancing durability aspects such as sulfate resistance, acid resistance, and reducing alkali-silica reaction expansion. The chapter concludes by emphasizing the need for further research to fully understand and harness the potential of MK in geopolymers.
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Metadata
Title
General Remarks
Author
Alaa M. Rashad
Copyright Year
2024
Book
Metakaolin Effect on Geopolymers’ Properties

Print ISBN: 978-3-031-45150-8

Electronic ISBN: 978-3-031-45151-5

Copyright Year: 2024

DOI
https://doi.org/10.1007/978-3-031-45151-5_7