Paper Title:
Investigation on Microwave Absorbing Properties of Double-Layer Cementitious Composites
  Abstract

Double-layer cementitious plates with absorbing microwave properties were designed, based on the impedance matching theory and electromagnetic wave propagation laws. The reflectivity of cementitious composites was measured in the frequency ranges from 8 GHz to 18GHz, and the influence of silica fume on the impedance of the composites surface was studied. Meanwhile, absorbing properties of cementitious plates, which used ferrite and carbon fiber composited ferrite as microwave absorbers, were also investigated respectively. It is shown that the addition of silica fume can improve the impedance matching between the cementitious composites and free space. Compared with the single-layer structure, the reflectivity of the double-layer cementitious plates decreased around 6 dB ~ 8 dB. The maximum reflection loss of double-layer cementitious plate employing carbon fiber and ferrite reached -16.2dB, while the absorption bandwidth under – 10 dB was from 9.6 to 18 GHz.

  Info
Periodical
Advanced Materials Research (Volumes 79-82)
Edited by
Yansheng Yin and Xin Wang
Pages
1843-1846
DOI
10.4028/www.scientific.net/AMR.79-82.1843
Citation
X. Z. Zhang, W. Sun, "Investigation on Microwave Absorbing Properties of Double-Layer Cementitious Composites", Advanced Materials Research, Vols. 79-82, pp. 1843-1846, 2009
Online since
August 2009
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Jun Zhang, Cheng Xu Gong
Abstract:This paper reports the tensile properties of a new class of engineered cementitious composite with characteristic of low drying shrinkage....
55
Authors: Iqbal Khan Mohammad
Abstract:Measurement and prediction of absorption of concrete by saturation method is presented. Measurement of absorption of concrete consisting of...
156
Authors: Chao Ming Pang, K.Y. Leung Christopher, Wei Sun
Chapter 2: Advanced Building Materials
Abstract:Non-biodegradable rubber waste from tyres can be employed for the making of pseudo-ductile cementitious composites (PDCC) which requires a...
1326
Authors: Heng Mao Niu, Yong Ming Xing, Yan Ru Zhao
Chapter 1: Advanced Materials and New Materials
Abstract:Engineered cementitious composites(ECC) are characterized by strain hardening and tight crack width control. Good fiber distribution can...
46