Relationship between Autogenous Shrinkage and Tensile Strength of Cement Paste with SCM
Publication: Journal of Materials in Civil Engineering
Volume 24, Issue 10
Abstract
Fly ash (FA), silica fume (SF), and ground blast furnace slag (GBFS) were used as the supplementary cementitious materials (SCMs) in cement paste. The autogenous shrinkage (AS) and the shrinkage cracks of cement paste with SCMs were experimentally investigated in this study, and the relationship of AS, tensile strength, and crack area of cement paste were analyzed. The test results show that FA decreases the AS of cement paste and SF increases the AS. Both the AS and the crack area of cement paste decrease with the increase of the water-binder (W/B) ratio. When W/B ratios of different cement pastes are kept the same, the tensile strength of cement paste is not influenced by the AS if the specimens can shrink freely. Equations are established to describe the relationship among AS, tensile strength, and crack area of the cement paste with SCMs.
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Acknowledgments
The authors would like to acknowledge the financial support provided by China 973 project “the basic research of environment-friendly in modern concrete (No. 2009CB623201),” Beijing Natural Science Foundation (No.8100001), and the excellent talent project of Beijing (No. 2009A005015000006).
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Information
Published In
Journal of Materials in Civil Engineering
Volume 24 • Issue 10 • October 2012
Pages: 1268 - 1273
Copyright
© 2012 American Society of Civil Engineers.
History
Received: Jul 15, 2011
Accepted: Feb 15, 2012
Published online: Feb 18, 2012
Published in print: Oct 1, 2012
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