Low Temperature Curing of Metakaolin Concrete
Publication: Journal of Materials in Civil Engineering
Volume 21, Issue 8
Abstract
The influence of low temperature curing on the performance of concrete containing metakaolin (MK) is investigated. Portland cement was partially replaced with 0–30% MK. The water to binder ratio was maintained at 0.5 for all mixes. Concretes were subjected to water and air curing at . Compressive strength was conducted on water cured specimens whereas, ultrasonic pulse velocity and length change were conducted on water and air cured specimens. During the first day of hydration, the concrete strength is substantially reduced especially at high MK content. However, the incorporation of up to 20% MK causes an enhancement in concrete strength beyond of curing. This increase could be up to 50% depending upon the age of curing and the MK content. After of curing the relative strength continues to increase. This finding is compared with results obtained in a previous investigation for MK concrete cured at and analyzed using the maturity method. The incorporation of up to 15% MK causes an increase in linear shrinkage. Beyond 20% MK, the shrinkage is reduced.
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Acknowledgments
The writer would like to thank Mr. Methven for taking part in the experimental program and the concrete laboratory technical staff Mr. Skelton and Mr. Harwood for their assistance and support.
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Information & Authors
Information
Published In
Journal of Materials in Civil Engineering
Volume 21 • Issue 8 • August 2009
Pages: 362 - 367
Copyright
© 2009 ASCE.
History
Received: Jul 7, 2006
Accepted: Feb 9, 2009
Published online: Jul 15, 2009
Published in print: Aug 2009
Notes
Note. Associate Editor: Jason Weiss
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