Abstract
It should be noted that as the matrix of cement-based wave-absorbing composites, cement not only plays the role of cementing material, but also has an absorbing wave capacity that should not be ignored. Therefore, the wave-absorbing property of cement within the frequency range of 1~18 GHz were studied with the arched testing method. The results show that with specimen thickness range of 5~30 mm, the positions of maximum wave-absorbing peaks do not change with different specimen curing period and surface roughness, but change to lower frequency region with the increase of specimen thickness; P·II cement has an absorption of 18 dB at the optimal thickness of 10 mm with bandwidth of 6 GHz at 8 dB absorption peak; and modified sulfoaluminate cement has maximum absorption rate of 16~22 dB at thickness of 5~20 mm with bandwidth of 2~3 GHz at 8 dB.
| Original language | English |
|---|---|
| Pages (from-to) | 528-532 |
| Number of pages | 5 |
| Journal | Jianzhu Cailiao Xuebao/Journal of Building Materials |
| Volume | 12 |
| Issue number | 5 |
| State | Published - Oct 2009 |
Keywords
- Modified sulfoaluminate cement
- P·II Portland cement
- Wave-absorbing property