Assessing the Quality Control of Self-Consolidating Concrete Properties
Publication: Journal of Construction Engineering and Management
Volume 138, Issue 2
Abstract
The results of a quality-control operation performed on the jobsite of a large volume of ready-mix self-consolidating concrete (SCC) are presented. To test the prerequisites of fresh SCC, three tests (slump flow [SF], V-Funnel [VF], and J-Ring [JR]) were prescribed to be performed on every truck. The acceptance condition for the supplied concrete was to meet the specified requirements for all three tests. This procedure seems adequate to derive reliable data about filling ability, resistance to segregation, deformation capacity, viscosity, and passing ability. The correlation between slump-flow and J-ring results suggests that these two tests could be associated by defining a proper reduced J-ring diameter and by checking the difference in height between the concrete inside and outside the ring. In general, it seems that a continuous control should be applied only on specific structures, such as structures with highly congested reinforcement, whereas when the stability of the supplies is achieved, a reduced testing control could be applied for ordinary structures. However, whatever the type of construction, in extreme weather conditions (very hot/cold) special care should be taken, and it could be necessary to increase the number of controls because under these conditions a higher probability of nonconformance to the guidelines was observed.
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Acknowledgments
The authors would like to express their appreciation to Professor J. F. Labuz of the University of Minnesota and to Professor P. J. M. Monteiro of the University of California, Berkeley for their valuable comments and suggestions.
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Information & Authors
Information
Published In
Journal of Construction Engineering and Management
Volume 138 • Issue 2 • February 2012
Pages: 197 - 205
Copyright
© 2012 American Society of Civil Engineers.
History
Received: Sep 29, 2009
Accepted: Apr 21, 2011
Published online: Apr 29, 2011
Published in print: Feb 1, 2012
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