防护工程电磁屏蔽混凝土电磁损耗及屏蔽性能研究

Study on electromagnetic loss and shielding performance of concrete in protective engineering

防护工程是保存己方人员和设备安全的重要设施,随着尤其电子技术的迅猛发展,现代战争的形式从传统的武器打击逐渐转移到对指挥通讯系统、电子设备及信息化武器等的毁伤和干扰,各种新型雷达、先进探测器,甚至电磁波武器相继问世,对防护工程的电磁屏蔽技术提出了新的更高的要求。以防护工程混凝土为研究对象,分析了电磁屏蔽机理,针对碳纤维改性混凝土电磁损耗性能以及电磁屏蔽效能进行了研究,结果表明碳纤维能够较好的提升混凝土电磁屏蔽效能,掺量越多、电磁波频率越高,其电磁屏蔽效能越好,当碳纤维掺量3‰时,电磁波频率达到2 GHz时,混凝土电磁屏蔽效能达到了46.5 d B,此时普通混凝土的电磁屏蔽效能仅为13.2 d B。

Protection engineering is an important facility to preserve the safety of personnel and equipment.With the rapid development of electronic technology in particular,the form of modern war has gradually shifted from the traditional weapon attack to the damage and interference of command and communication system,electronic equipment and information weapons.Various new types of radars,advanced detectors and even electromagnetic wave weapons have come out one after another new and higher requirements have been put forward.The protection engineering concrete is taken as the research object,the electromagnetic shielding mechanism is analyzed,and the electromagnetic loss performance and electromagnetic shielding effectiveness of carbon fiber modified concrete are studied.The results show that carbon fiber can better improve the electromagnetic shielding effectiveness of concrete.When the amount of carbon fiber is 3‰with the electromagnetic wave frequency at 2 GHz,the electromagnetic shielding effectiveness of concrete reaches 46.5 d B,while that of ordinary concrete is only 13.2 d B.