Viscosity of Portland cement paste as a function of concentration

The flow behavior of Portland cement paste was studied as a function of its concentration. The relationship between viscosity and concentration was found to be well described by the Krieger-Dougherty equation. For pastes dispersed using a superplasticizer, the maximum volume fraction was found to be...

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Bibliographic Details
Published in:Advanced cement based materials 1995-03, Vol.2 (2), p.62-69
Main Authors: Struble, Leslie, Sun, Guo-Kuang
Format: Article
Language:English
Subjects:
Cement paste
Intrinsic viscosity
Maximum volume fraction
Rheology
Viscosity
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Summary:The flow behavior of Portland cement paste was studied as a function of its concentration. The relationship between viscosity and concentration was found to be well described by the Krieger-Dougherty equation. For pastes dispersed using a superplasticizer, the maximum volume fraction was found to be approximately 0.7, and the intrinsic viscosity was found to be approximately 5. Pastes that were not dispersed were considerably higher in viscosity; such flocculated pastes fit the Krieger-Dougherty equation, but gave a much lower maximum volume fraction, indicating fairly open flocs even at the high strain rate used for viscosity measurements (500 seconds −1).
ISSN:1065-7355
1878-5948
DOI:10.1016/1065-7355(95)90026-8