Electromagnetic Shielding Effectiveness of Cement-Matrix Composite Containing Nickel Fiber

Liu Jun Luo; Guo Xuan Xiong; Shu Fang Zheng; Min Deng

doi:10.4028/www.scientific.net/AMR.177.570

Paper Titles

On the Experimental Methods for the Determination of Elastic Modulus and Hardness of Cement Particles by Nanoindentation
p.554

Absorbing and Mechanical Properties of Cement-Based Composites with Nano-Titanic Oxide Absorbent
p.558

Bond Behaviour of Concrete Block Including Steel Mesh of Various Rib Pattern and Bar Size
p.562

Seebeck Effect in Graphite-Carbon Fiber Cement Based Composite
p.566

Electromagnetic Shielding Effectiveness of Cement-Matrix Composite Containing Nickel Fiber
p.570

Testing Methods of Adiabatic Temperature Rise in Concrete
p.574

Electrochemical Charaterization of Steel Concrete under Multi-Factors Influence
p.578

Detecting the Efficiency of Cathodic Protection in Reinforced Concrete by Use of Galvanostatic Pulse Technique
p.584

Temperature Prediction in the System K₂O-CaO-Al₂O₃-SiO₂-P₂O₅
p.590

HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 177Electromagnetic Shielding Effectiveness of...

Electromagnetic Shielding Effectiveness of Cement-Matrix Composite Containing Nickel Fiber

Abstract:

The cement-matrix composite with the function of building structure and electromagnetic interference shielding was prepared by filling nickel fiber into cement. The dispersion of nickel fiber in cement-matrix composite and the shielding effectiveness of composite containing various volume fractions of nickel fiber were investgated in this paper. The electromagnetic interference shielding effectiveness in the frequency range of 0.1 MHz to 1.5 GHz and the conductivity of composite were measured by coaxial cable method and two-probe method, respectively. The dispersion of nickel fiber in cement was characterized by EPMA. The results indicated that the dispersion property of nickel fiber by sodium hexametaphosphatecan was better than sodium carboxymethylcellulose. The optimum contents of nickel fiber in composite was 5 vol.%, the maximum shielding effectiveness was 45.7 dB in 140 MHz and the minimum shielding effectiveness was 36 dB in 1240 MHz. The shielding effectiveness of composite with 7 vol.% nickel fiber was lower than that with 5 vol.% nickel fiber due to the tendency of nickel fiber cling to each other.