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Title |
Evaluation on the Impact Resistant Performance of Fiber Reinforced Concrete by High-Velocity Projectile and Contacted Explosion
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Authors |
남정수 ; 김홍섭 ; 이인철 ; Hiroyuki Miyauchi ; 김규용 |
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DOI |
https://doi.org/10.4334/JKCI.2013.25.1.107 |
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Keywords |
섬유보강 ; 내충격 성능 ; 고속 비상체 ; 폭발 ; 국부손상 fiber reinforcement ; impact resistant performance ; high-velocity projectile ; explosion ; local damage |
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Abstract |
In this study we experimentally evaluated an impact resistant performance of fiber reinforced concrete in the moment of explosion by high-velocity projectile with emulsion explosive. To assess the impact resistance, we conducted the impact test of high-velocity projectile which reaches an impact speed of 350 m/s and the experiment of contact exploding emulsion explosive. As a result, bending and tensile performance depending on type of PVA, PE fiber (polyvinyl alcohol fiber, polyethylene fiber) and steel fiber affects destruction of rear side in the form of spalling. Destroying the backside of the concrete compressive strength compared to suppress the bending and tensile performance is affected. In addition, the experiment shows that the destruction patterns of concrete specimen producted by high velocity impact and contact explosion are significantly similar. Therefore, it is possible to predict the destruction patterns of specimens in the situation of contact explosion by high-velocity projectile.
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