碳化硅／石墨混凝土的电磁屏蔽性能实验研究

Experimental research on electromagnetic shielding efficiency of SiC-Graphite concrete

通过实验研究，发现以普通磨料类碳化硅为骨料的混凝土也有一定的电磁屏蔽性能；通过加入石墨组分形成碳化硅。石墨吸收相，能进一步增强复合体的吸波性能。得出结论如下：碳化硅．石墨组合比例变化时，碳化硅，石墨=1：1的比例时综合性能较好，混凝土电磁屏蔽效能在0．3～1500MHz频带内达到22dB以上。

Adding in SiC abrasive grain and SiC-graphite gain as aggregate of concrete, the electromagnetic shielding efficiency of composite concretes were researched with experiment, and their rules were analyzed and compared. The electromagnetic shielding efficiency of SiC-graphite concrete is better, and when proportion of SiC/SiC-graphite is 1 ： 2, the comprehensive performance of composite concrete is doable, and the electromagnetic shielding efficiency of concrete is beyond 22 dB in the range of 0.3-1000 MHz.