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Simulation of the particle size distribution during the early hydration of portland cement

Title: Simulation of the particle size distribution during the early hydration of portland cement
Author(s): S. Brendle, S. Erfurt, M.R. de Rooij
Paper category : conference
Book title: International RILEM Symposium on Concrete Modelling - ConMod '08
Editor(s): E. Schlangen and G. De Schutter
Print-ISBN: 978-2-35158-060-8
e-ISBN: 978-2-35158-076-9
Publisher: RILEM Publications SARL
Publication year: 2008
Pages: 87 - 94
Total Pages: 8
Nb references: 9
Language: English

Abstract: Cement and concrete technology are developing to comply with the specification of a high performance material designed for specific construction requirements and demands. As part of the particular needs, control of set time and hardening rate of concrete becomes increasingly important. To move forward and provide controlling options on the hydration chemistry, it is essential to obtain a better fundamental understanding of the hydration processes of Portland cements.
The focus of this article is on the hydration kinetics during the first minutes of cement reaction. The cement hydration starts out with a strong exothermic peak. This first interaction of cement particle with water is characterised by a dynamic study of the particle size distribution. The comparison of the powder material with the reacted paste did show drastic changes in the particle size distribution after one minute of reaction. The simulation of the changes in distribution by tri-phase fit of the Rosin-Rammler formula could demonstrate how present single fractions develop in time.

Online publication: 2009-06-15
Publication type : full_text
Public price (Euros): 0.00

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