Performance of Hybrid-Fiber ECC Blast/Shelter Panels Subjected to Drop Weight Impact
Publication: Journal of Materials in Civil Engineering
Volume 19, Issue 10
Abstract
This paper presents the results of an experimental study to evaluate the damage and failure mode of hybrid-fiber engineered cementitious composite (ECC) panels caused by large projectiles or fragments. The aim is to quantify the extent to which hybrid-fiber ECC improves the resistance of blast panels against impact loading. Drop weight tests were conducted on full-scale hybrid-fiber ECC blast/shelter panels to study their response and performance under impact loading. Conventional steel reinforced concrete (RC) and steel fiber-reinforced concrete (FRC) blast panels were also tested to identify the advantages of using ECC in this application. Both the drop weight projectile with a hemispherical head and the panel specimen were instrumented to facilitate evaluation of the global and local response. The impact resistance of blast panels of different materials is evaluated in terms of the extent of damage, energy absorption capacity and residual resistance against multiple impacts. The drop weight impact test results showed that the hybrid-fiber ECC panels exhibit lesser damage, significantly improved impact resistance against multiple impacts and improved ductility and energy absorption capacity compared to both RC and FRC counterparts. A single degree of freedom model was adopted to analyze the global flexural behavior of RC and ECC panels.
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Acknowledgments
Research reported herein is supported by Grant No. UNSPECIFIEDR-379-000-002-422 from the Defence Science and Technology Agency (DSTA), Singapore, through the Centre for Protective Technology, National University of Singapore. The assistance of Mr. Y. Y. Teo for the experiment work is appreciated.
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Information & Authors
Information
Published In
Journal of Materials in Civil Engineering
Volume 19 • Issue 10 • October 2007
Pages: 855 - 863
Copyright
© 2007 ASCE.
History
Received: Feb 16, 2006
Accepted: Jun 30, 2006
Published online: Oct 1, 2007
Published in print: Oct 2007
Notes
Note. Associate Editor: Houssam A. Toutanji
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