Use of fly ash as an admixture for electromagnetic interference shielding

被引：98

作者：

Cao, JY ^{[1
]}

Chung, DDL ^{[1
]}

机构：

[1] SUNY Buffalo, Composite Mat Res Lab, Buffalo, NY 14260 USA

来源：

CEMENT AND CONCRETE RESEARCH | 2004年 / 34卷 / 10期

关键词：

electrical properties; magnetic properties; silica fume; fly ash; shielding;

D O I：

10.1016/j.cemconres.2004.02.003

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The use of fly ash as an admixture results in enhancement of the electromagnetic interference (EMI) shielding effectiveness from 4 to 8 dB at I GHz, whereas the use of silica fume as an admixture results in negligible effect on the shielding effectiveness. The DC electrical resistivity is decreased slightly by silica fume, but is essentially not affected by fly ash. Both fly ash and silica fume cause slight increases in the reflectivity. The effectiveness of fly ash for shielding is attributed to the Fe2O3 component (15.4 wt.%) in the fly ash. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：1889 / 1892

页数：4

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