Effect of a Polyethylhydrosiloxane Admixture on the Durability of Concrete with Supplementary Cementitious Materials
Publication: Journal of Materials in Civil Engineering
Volume 19, Issue 10
Abstract
This paper assesses durability of a high-strength concrete with large volumes of supplementary cementitious materials modified by a polyethylhydrosiloxane-based admixture and a superplasticizer. The study introduces the concept of a modified multicomponent binder, comprised of portland cement, finely ground supplementary cementitious material (fly ash, ponded ash, or granulated blast furnace slag), and a highly reactive powder component (usually silica fume), modified by a superplasticizer. The research program included tests of water permeability, freezing and thawing resistance, and the investigation of the effect of the binder on the passivation of steel reinforcement. The observations indicated that the use of the superplasticizer and polyethylhydrosiloxane admixtures yields the required air content and air void spacing factor for the freezing and thawing resistance, and the passivation of steel reinforcement. The research confirmed that the polyethylhydrosiloxane admixture has a beneficial effect on the durability of concrete with large volumes of supplementary cementitious materials. The results have important implications for offshore structures, bridges, roadways, pavements, foundations, precast concrete, and other applications.
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Acknowledgments
The writers acknowledge the help of Professor O. V. Kuncevich with the development and realization of this research program. The valuable assistance of the staff of the Chemical Admixtures Lab of NIIZhB in Moscow and Construction Materials Lab of St. Petersburg State University of Railway Communications (LIIZhT) is highly appreciated. The writers are grateful to Professor R. N. Swamy and Professor Tarun R. Naik for the discussions and valuable comments that were useful to introduce our research findings.
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Information & Authors
Information
Published In
Journal of Materials in Civil Engineering
Volume 19 • Issue 10 • October 2007
Pages: 809 - 819
Copyright
© 2007 ASCE.
History
Received: Dec 1, 2005
Accepted: Oct 9, 2006
Published online: Oct 1, 2007
Published in print: Oct 2007
Notes
Note. Associate Editor: Manoochehr Zoghi
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