Abstract
The addition of short carbon fibres and chemical agents (triethanolamine, sodium sulphate and potassium aluminium sulphate) to Portland cement greatly increased the electromagnetic interference shielding effectiveness of the cement. For example, the attenuation of electromagnetic radiation of a frequency of 1.5 GHz increased from 0.5 dB for plain cement mortar (3.6 mm thick) to 10.2 dB for the same thickness of cement mortar containing chemical agents and 3 mm long carbon fibres (in the amount of 0.5% by weight of the cement or 0.21% by volume of cement mortar).
| Original language | English |
|---|---|
| Pages (from-to) | 379-381 |
| Number of pages | 3 |
| Journal | Composites |
| Volume | 20 |
| Issue number | 4 |
| DOIs | |
| State | Published - Jul 1989 |
Keywords
- carbon fibre
- cement
- concrete
- electromagnetic shielding
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