Response of Concrete Elements Subjected to Impact by Fragments with Varying Aspect Ratios
Publication: Journal of Materials in Civil Engineering
Volume 33, Issue 4
Abstract
Concrete specimens of varying compressive strengths were subjected to impact from fragments with relatively common width-to-thickness, or aspect, ratios. The influence of material characteristics on penetration and perforation response and the ability of existing penetration depth prediction methodologies to forecast protective structural member performance when impacted by these fragments were evaluated. The structural element response was assessed using a cylindrical target specimen designed with a circumferential steel ring to provide radial confinement. The general relationships between concrete compressive strength and impact response, mass loss, and the benefits of fiber reinforcement in structural element protective performance were found to be similar regardless of fragment aspect ratio. Compressive strength was found to have a greater effect on impact performance, and penetration depth was found to be of greater concern as the fragment aspect ratio decreased. Some existing penetration methodologies were found to be fairly accurate when predicting impact response from lower-aspect-ratio fragments; this was not the case for high-aspect-ratio fragment impacts on the same concrete materials.
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Data Availability Statement
All data, models, and code generated or used during the study appear in the published article.
Acknowledgments
This study was supported by the US Army Engineer Research and Development Center and would not have been possible without the valuable contributions of Mr. Bowen Woodson and Mr. Ricky Magee of ERDC. Permission to publish was granted by the Director, ERDC Geotechnical & Structures Laboratory.
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Published In
Journal of Materials in Civil Engineering
Volume 33 • Issue 4 • April 2021
Copyright
© 2021 American Society of Civil Engineers.
History
Received: Jun 11, 2020
Accepted: Aug 31, 2020
Published online: Jan 26, 2021
Published in print: Apr 1, 2021
Discussion open until: Jun 26, 2021
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