Abstract
An electromagnetic interference (EMI) shielding effectiveness of 70 dB at 1.5 GHz has been attained in cement paste that contains 0.72 vol.% stainless steel fibers of diameter 8 μm and length 6 mm. The shielding is primarily by reflection. The material exhibits electrical resistivity 16 Ω cm. The presence of sand essentially does not affect the shielding effectiveness. The fibers remain effective in the presence of steel rebars. For comparison, the shielding effectiveness of a solid piece of stainless steel is 78 dB at 1.5 GHz.
| Original language | English |
|---|---|
| Pages (from-to) | 329-332 |
| Number of pages | 4 |
| Journal | Cement and Concrete Research |
| Volume | 34 |
| Issue number | 2 |
| DOIs | |
| State | Published - Feb 2004 |
Keywords
- Cement paste
- Electrical properties
- Fiber reinforcement
- Shielding
- Silica fume
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