期刊
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
卷 188, 期 -, 页码 119-129出版社
ELSEVIER
DOI: 10.1016/j.mseb.2014.07.001
关键词
Concrete composite; Carbon nanotube; Electromagnetic characterization; Electric permittivity; Finite element method simulation; Shielding effectiveness
The electromagnetic properties of carbon nanotube powder reinforced concretes are numerically and experimentally characterized. This typology of composite material is built by following the simple procedure usually adopted for the on-site concrete production. The dielectric parameters are investigated by means of waveguide measurements in the frequency band 0.75-1.12 GHz that is currently exploited in mobile phone radio access networks. The obtained results are used to compute the electromagnetic shielding effectiveness of large wall-shaped concrete structures. A shielding effectiveness up to 50 dB is obtained for a 15 cm thick wall when the carbon nanotube inclusion is raised up to 3 wt%. (C) 2014 Elsevier B.V. All rights reserved.
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