Use of fly ash as an admixture for electromagnetic interference shielding

Jingyao Cao; D. D.L. Chung

doi:10.1016/j.cemconres.2004.02.003

Use of fly ash as an admixture for electromagnetic interference shielding

Jingyao Cao
, D. D.L. Chung

Department of Mechanical and Aerospace Engineering

SUNY Buffalo

Research output: Contribution to journal › Article › peer-review

116 Scopus citations

Abstract

The use of fly ash as an admixture results in enhancement of the electromagnetic interference (EMI) shielding effectiveness from 4 to 8 dB at 1 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 Fe₂O ₃ component (15.4 wt.%) in the fly ash.

Original language	English
Pages (from-to)	1889-1892
Number of pages	4
Journal	Cement and Concrete Research
Volume	34
Issue number	10
DOIs	https://doi.org/10.1016/j.cemconres.2004.02.003
State	Published - Oct 2004

Keywords

Electrical properties
Fly ash
Magnetic properties
Shielding
Silica fume

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10.1016/j.cemconres.2004.02.003

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abstract = "The use of fly ash as an admixture results in enhancement of the electromagnetic interference (EMI) shielding effectiveness from 4 to 8 dB at 1 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 Fe2O 3 component (15.4 wt.\%) in the fly ash.",

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AU - Chung, D. D.L.

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N2 - The use of fly ash as an admixture results in enhancement of the electromagnetic interference (EMI) shielding effectiveness from 4 to 8 dB at 1 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 Fe2O 3 component (15.4 wt.%) in the fly ash.

AB - The use of fly ash as an admixture results in enhancement of the electromagnetic interference (EMI) shielding effectiveness from 4 to 8 dB at 1 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 Fe2O 3 component (15.4 wt.%) in the fly ash.

KW - Electrical properties

KW - Fly ash

KW - Magnetic properties

KW - Shielding

KW - Silica fume

UR - https://www.scopus.com/pages/publications/4344645824

U2 - 10.1016/j.cemconres.2004.02.003

DO - 10.1016/j.cemconres.2004.02.003

M3 - Article

AN - SCOPUS:4344645824

SN - 0008-8846

VL - 34

SP - 1889

EP - 1892

JO - Cement and Concrete Research

JF - Cement and Concrete Research

IS - 10

ER -

Use of fly ash as an admixture for electromagnetic interference shielding

Abstract

Keywords

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