Compressive Strength of Concrete Cores under High Strain Rates
Publication: Journal of Performance of Constructed Facilities
Volume 29, Issue 1
Abstract
A pulse-shaped split Hopkinson pressure (SHPB) was employed to determine the dynamic compressive mechanical responses of concrete cores. The loading pulses in SHPB experiments were precisely controlled to ensure that the core specimen deforms at a nearly constant strain rate under dynamically equilibrated stress during compression. A modified two-parameter Weibull distribution was used to analyze the test data. The Kolmogorov-Smirnov goodness-of-fit test was used to decide whether test data come from a population with this distribution. On the basis of the test data, Kolmogorov-Smirnov goodness-of-fit test, and probability plot, it is found that the modified Weibull model can be applied to compressive strength for concrete cores. In addition, the strain rate effect on the compressive strength of cores can be accurately predicted from the modified Weibull model.
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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 writers would like to express their gratitude to the reviewers for their helpful comments.
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Published In
Journal of Performance of Constructed Facilities
Volume 29 • Issue 1 • February 2015
Copyright
© 2014 American Society of Civil Engineers.
History
Received: Sep 24, 2013
Accepted: Jan 27, 2014
Published online: Jan 29, 2014
Discussion open until: Nov 17, 2014
Published in print: Feb 1, 2015
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