Influence of Combined Transportation Time and Temperature on Flow Properties of Self-Consolidating Concrete
Publication: Journal of Materials in Civil Engineering
Volume 26, Issue 6
Abstract
The investigation presented herein was intended to study the influence of combined transportation time and hot and cold temperatures on the flow properties of self-consolidating concretes (SCC). Seven different temperatures (43, 36, 28, 21, 14, 7, and ) and five transportation times (10, 20, 40, 60, and 80 min) were adopted. Transportation time of 10 min and temperature of 21°C were used as the control conditions. Polycarboxylate-based high range water-reducing admixture (HRWRA) and viscosity modifying admixture (VMA) were used to produce different matrices that met the target unconfined slump flow of 635 and 711 mm and dynamic stability of stable to highly stable conditions. In general, the selected self-consolidating concrete produced and transported in extreme temperatures experienced slump flow losses in hot conditions and slump flow gains in cold environments when compared to those of the equivalent concretes produced under the control condition. Significant losses in unconfined flow rate () were observed at the evaluated temperatures when transportation time exceeded 40 min.
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Acknowledgments
The authors would like to acknowledge the financial support of the Nevada Department of Transportation, Grant number P 077-06-803. Thanks are also given to a number of admixture manufacturers and concrete suppliers who contributed materials and equipments used in this investigation. Their names are withheld to avoid any concern of commercialization or private interest.
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Information & Authors
Information
Published In
Journal of Materials in Civil Engineering
Volume 26 • Issue 6 • June 2014
Copyright
© 2014 American Society of Civil Engineers.
History
Received: Nov 19, 2012
Accepted: Jun 17, 2013
Published online: Jun 19, 2013
Published in print: Jun 1, 2014
Discussion open until: Aug 3, 2014
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