Variability of Compressive Strength of Concrete Cores
Publication: Journal of Performance of Constructed Facilities
Volume 28, Issue 4
Abstract
A comprehensive test program was conducted on the compressive strength of concrete cores. The tests involved eight mixes of concrete. Because over 200 tests were conducted, it was possible to undertake an analysis of the concrete cores using the probabilistic treatment of strength. The present work reports a comparative study of alternative probabilistic models to describe the compressive strength of concrete cores. A large class of probability models including two-parameter Weibull, three-parameter Weibull, normal, lognormal, and gamma distributions were validated using test data. This information is useful in the theoretical description of concrete failure. Furthermore, the results were compared in terms of modified Kolmogorov-Smirnov, log-likelihood, and minimum chi-square criterion. The results suggested that none of the described probability methods are adequate for determining the variability of the compressive strength of concrete cores.
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Acknowledgments
Financial support for this research was provided by the National Natural Science Foundation of China (Grant No. 51178162) and the Fundamental Research Funds for the Central Universities (Grant No. 2013B05514). The authors would like to express their gratitude to the editor and reviewers for their helpful comments.
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Published In
Journal of Performance of Constructed Facilities
Volume 28 • Issue 4 • August 2014
Copyright
© 2014 American Society of Civil Engineers.
History
Received: Feb 18, 2013
Accepted: Sep 5, 2013
Published online: Sep 7, 2013
Published in print: Aug 1, 2014
Discussion open until: Oct 9, 2014
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