防护设施用超高强度混凝土的电磁屏蔽效果和抗冲击性实验研究

Chang Yu Kuo, Ying Kuan Tsai, Jo Yen Nieh, Yi Shiuan Tian
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摘要

研究人员在超高性能混凝土(UHPC)中加入短碳纤维和多层石墨烯,以改善其动态力学性能和电磁屏蔽效果(SE)。在电磁屏蔽效果测试中,结果表明,均匀分布导电纤维的超高性能混凝土在高频下表现出卓越的屏蔽效果。与普通混凝土相比,UHPC 能够承受更高的冲击能量。同时增强水泥基材料的电磁屏蔽特性和动态机械性能是一项挑战。在这项研究中,采用复合结构是解决这一问题的有效方法。根据实验结果,建造了一个按比例测试的防护设施,研究成果可为防护结构的设计和建造提供参考。
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An Experimental Study on Electromagnetic Shielding Effectiveness and Impact Resistance of UHPC for Protective Facilities
The research was conducted on incorporating short carbon fiber and multi-layer graphene into ultra-high performance concrete (UHPC) to improve the dynamic mechanical performance and electromagnetic shielding effectiveness (SE). In the electromagnetic shielding effectiveness testing, the results shown that UHPC with uniformly distributed conductive fibers exhibited superior shielding effectiveness at high frequencies. In comparison to normal concrete, the UHPC demonstrated the capability to withstand higher impact energy. Simultaneously enhancing both electromagnetic shielding characteristics and dynamic mechanical performance of cementitious materials can be challenging. In this study, employing a composite structure was effective solution to overcome this issue. In accordance with the experimental results, a scaled testing protective facility has been constructed, and the research results could provide the reference for the design and construction of protective structures.
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