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- Title
The Electromagnetic Wave Absorption Performance and Mechanical Properties of Cement-Based Composite Material Mixed with Functional Aggregates with High Fe<sub>2</sub>O<sub>3</sub> and SiC.
- Authors
Zuoqun Zhang; Chaoshan Yang; Hua Cheng; Xiaohan Huang; Yuhao Zhu
- Abstract
Now there're many researches on the electromagnetic radiation protection function of the cement-based electromagnetic wave absorbing materials, such materials have been widely used in various types of buildings. This paper proposed an idea for preparing a cement-based composite material by mixing functional aggregates with high content of Fe2O3 and SiC, that is, adding Fe3O4 powder and nano-SiC of different contents in the clay, and then sintering at 119°C; the prepared aggregates showed obvious magnetic loss and dielectric loss to electromagnetic waves, and the numerical tube pressure could reach 16.83MPa. The double-layer reflectivity test board made of functional aggregates showed excellent electromagnetic wave absorption performance, its reflection loss was less than -10dB in the frequency range of 8~18GHz (corresponding to energy absorption greater than 90% EM), and its maximum RL reached -12.13dB. In addition, the compressive strength of the cement-based composite material at the age of 28 days reached 50.1 MPa, which can meet the strength requirements of building materials.
- Subjects
ELECTROMAGNETIC wave absorption; COMPOSITE materials testing; BUILDING material testing; COMPRESSIVE strength; DIELECTRIC loss; MAGNETIC flux leakage
- Publication
Journal of Composite & Advanced Materials / Revue des Composites et des Matériaux Avancés, 2021, Vol 31, Issue 4, p249
- ISSN
1169-7954
- Publication type
Article
- DOI
10.18280/rcma.310409