Influence of absorbent on electromagnetic wave absorbing property of porous concrete
LIANG Li-min, YU Hong-fa, WU Qing-ling
Dept.of Civil Engineering,Nanjing University of Aeronautics & Astronautics,Nanjing 210016,China
Abstract:
Influences of ferrite content and iron ore powder content on electromagnetic wave absorbing property of porous concrete are studied.The radar cross section(RSC)of samples was tested in a microwave anechoic chamber.Results show that the optimum content of ferrite is 15%,and the minimum,maximum and average reflectivity of the sample is-46.60 dB,-10.84 dB and-23.75 dB,respectively.And the sample’s improved bandwidth is 8.2 GHz.The optimum content of iron ore powder is 20%,and the minimum,maximum and average reflectivity of the sample is-34.69 dB,-9.25 dB and-20.69 dB,respectively.And the sample’s improved bandwidth is 6 GHz.In conclusion,appropriate ferrite and iron ore powder can improve wave absorbing property and widen wave absorption bandwidth of porous concrete.
Key words: porous concrete absorbing property reflectivity
DOI：10.11916/j.issn.1005-9113.2010.05.009
Clc Number:TU528
Fund:
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Influence of absorbent on electromagnetic wave absorbing property of porous concrete
本站小编 哈尔滨工业大学/2019-10-23
相关话题/Influence absorbent electromagnetic wave absorbing
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