摘要
介绍了平板材料对高频电磁波的屏蔽原理,研究硅灰不同龄期对水泥基材料的电阻率、强度和电磁屏蔽效能的影响。随着龄期增加,水泥基材料的电磁屏蔽效能下降;在水泥基材料中掺入硅灰,水泥基材料的电磁屏蔽效能增大,硅灰的最佳掺量为20%。
The shielding principle of fiat plate to high frequency electromagnetic wave is introduced. The effect of silica fume with different age on resistivity, strength and electromagnetic shielding effectiveness of cement based material are studied. The electromagnetic shielding effectiveness of cement based material descends with the age of silica fume increases, its electromagnetic shielding effectiveness increases when silica fume is added into the material, and the optimal content of silica fume is 20%.
出处
《新型建筑材料》
北大核心
2008年第6期66-68,共3页
New Building Materials
关键词
水泥基材料
硅灰
电阻率
电磁屏蔽效能
cement based material
silica fume
resistivity
electromagnetic shielding effectiveness
