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Viscosity of Portland cement paste as a function of concentration

✍ Scribed by Leslie Struble; Guo-Kuang Sun

Publisher
Elsevier Science
Year
1995
Tongue
English
Weight
686 KB
Volume
2
Category
Article
ISSN
1065-7355

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✦ Synopsis

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-I).

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