Concrete Damage Evolution and Three-Dimensional Reconstruction by Integrating CT Test and Fractal Theory
Publication: Journal of Materials in Civil Engineering
Volume 29, Issue 9
Abstract
Computerized tomography (CT) scanning is one of the most effective techniques used in studying concrete crack initiation and propagation. CT scanning of concrete under uniaxial compression was used to monitor the mesodistribution in concrete. Fractal dimensions and damage variables of CT images corresponding to various crack development stages of concrete were calculated. The CT images’ fractal dimension changes were observed to have the same trend as the concrete damage-loading curves. The fractal dimensions and damage variables of CT images increase rapidly at a certain loading level, indicating a dangerous condition in the concrete. The proposed integration of CT testing and fractal analysis provides a useful and effective tool for monitoring concrete mesodamage and for evaluating concrete performance.
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Acknowledgments
This paper is supported by the Key Fund Project program sponsored by the Education Department of Hebei Province (ZD2014073) and the Technology Fund Projects of Hebei Agricultural University (LG201403). Thanks go to the support of the “333 Talents Project” of Hebei province and the program support of Young and Middle-aged Teachers Overseas Research and Learning (2014) of Hebei Agricultural University. Tremendous thanks to several colleagues and graduate students for their support during the various stages of the work summarized here.
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Published In
Journal of Materials in Civil Engineering
Volume 29 • Issue 9 • September 2017
Copyright
©2017 American Society of Civil Engineers.
History
Received: Aug 15, 2016
Accepted: Jan 6, 2017
Published online: May 11, 2017
Published in print: Sep 1, 2017
Discussion open until: Oct 11, 2017
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