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Influence of Waste Tire Rubber on Fresh and Hardened Properties of Self-Compacting Rubberized Concrete (SCRC) Read chapter Read first chapter

2020 | OriginalPaper | Chapter

Early Properties of Portland Cements with Varied Set Regulators

Authors : Tamino Hirsch, Tobias Dorn, Dietmar Stephan

Published in: Rheology and Processing of Construction Materials

Publisher: Springer International Publishing

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Abstract

The effects of variation of amount and type of calcium sulfate on the early behaviour of hydrating Portland cement were examined. Initial setting of pastes determined via the Vicat needle penetration method indicates that not only the amount but also the type of set regulator has a substantial impact on early properties of hydrating cement. The influence of the type not only depends on its concentration but also on the Portland cement clinker used. In the measurement of ultrasonic P-wave velocity of hydrating pastes, different stages of strength gain can be defined. The successive addition of set regulators changes the material properties in these stages in different ways. Examinations lead to the conclusion that differences in the prepared samples are mainly due to different solubility of calcium sulfate types, early ettringite formation and the amount of reacting aluminate phases of the clinker.

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previous chapter Influence of Cements Containing Calcareous Fly Ash on Rheological Properties of Fresh Mortars and Its Variability
next chapter Influence of Different Accelerators on the Rheology and Early Hydration of Cement Paste
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Metadata
Title
Early Properties of Portland Cements with Varied Set Regulators
Authors
Tamino Hirsch
Tobias Dorn
Dietmar Stephan
Copyright Year
2020
Book
Rheology and Processing of Construction Materials

Print ISBN: 978-3-030-22565-0

Electronic ISBN: 978-3-030-22566-7

Copyright Year: 2020

DOI
https://doi.org/10.1007/978-3-030-22566-7_12