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Supervised by Ministry of Industry and Information Technology of The People's Republic of China Sponsored by Harbin Institute of Technology Editor-in-chief Yu Zhou ISSNISSN 1005-9113 CNCN 23-1378/T

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Related citation:LIANG Li-min,YU Hong-fa,WU Qing-ling.Influence of absorbent on electromagnetic wave absorbing property of porous concrete[J].Journal of Harbin Institute Of Technology(New Series),2010,17(5):647-650.DOI:10.11916/j.issn.1005-9113.2010.05.009.
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Influence of absorbent on electromagnetic wave absorbing property of porous concrete
Author NameAffiliation
LIANG Li-min Dept.of Civil Engineering,Nanjing University of Aeronautics & Astronautics,Nanjing 210016,China 
YU Hong-fa Dept.of Civil Engineering,Nanjing University of Aeronautics & Astronautics,Nanjing 210016,China 
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
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