Electromagnetic Wave Absorption Properties and Mechanical Properties of Aramid Fiber Reinforced Cement

Abstract:

To solve more and more serious electromagnetic radiations, cement-based composites were prepared by introducing aramid fiber into cement. The reflection losses were studied using arched testing method in the frequency range of 1.7~18 GHz. The results showed that the absorption properties and mechanical properties were all improved preferably. The mechanisms were discussed, which indicated that the space network structure lapped into mutually by aramid fiber played an important role. The filling ratio of aramid fiber as well as the length of fiber had influence on the absorption properties, the breaking strength and the compressive strength of cement. The lowest reflection loss of -12.2 dB was obtained at 18 GHz, the effective absorption bandwidth (less than -8 dB) reached 9.15 GHz ,and the compressive strength was twice than that of cement paste when the specimen was filled with 8 vol. % aramid fiber with length of 3mm.

• Periodical: Advanced Materials Research (Volumes 512-515)
• Pages: 2873-2877
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.512-515.2873
• Online since: May 2012
• Authors: Yue Fang Zhang, Bao Yi Li, Shun Hua Liu, Wan Jun Hao
• Keywords: Aramid Fiber, Concrete, Electromagnetic Wave Absorption, Mechanical Property

References

[1] M.S. Cao, R. Q, C.J. Qiu and J. Zhu, Matching design and mismatching analysis towards radar absorbing coatings based on conducting plate, Mater Design 24 (2003), p.391.

DOI: 10.1016/s0261-3069(02)00119-x

[2] S. Motojima, S. Hoshiya, Y. Hishikawa, Electromagnetic wave absorption properties of carbon microcoils/PMMA composite beads in W bands, Carbon 41 (2003) 2658-2660.

DOI: 10.1016/s0008-6223(03)00292-6

[3] S.M. Abbas, A.K. Dixit, R. Chatterjee, T.C. Goel, Complex permittivity, complex permeability and microwave absorption properties of ferrite–polymer composites, J. Magn. Magn. Mater. 309 (2007) 20-24.

DOI: 10.1016/j.jmmm.2006.06.006

[4] Hongtao Guan, Shunhua Liu, Yuping Duan, Ji Cheng, Cement based electromagnetic shielding and absorbing building materials, Cement Concrete Comp. 28 (2006) 468–474.

DOI: 10.1016/j.cemconcomp.2005.12.004

[5] Dai Yawen, Sun Mingqing, Liu Chenguo, Li Zhuoqiu, Electromagnetic wave absorbing characteristics of carbon black cement-based composites, Cement Concrete Comp. 32 (2010) 508–513.

DOI: 10.1016/j.cemconcomp.2010.03.009

[6] J.Cao, D.D.L. Chung, Coke powder as an admixture in cement for electromagnetic interference shielding. Carbon 41 (2003) 2433-2436.

DOI: 10.1016/s0008-6223(03)00289-6

[7] Cengiz Duran Atis, Okan Karahan, Properties of steel fiber reinforced fly ash concrete, Constr. Build Mater. 23 (2009) 392–399.

[8] A. Oikonomou, T. Giannakopoulou, G. Litsardakis, Design, fabrication and characterization of hexagonal ferrite multi-layer microwave absorber. J. Magn. Magn. Mater, 316 (2007) 827–830.

DOI: 10.1016/j.jmmm.2007.03.114

[9] D.D.L. Chung, Cement reinforced with short carbon fibers: a multifunctional material, Compos. Part B-Eng. 31 (2000) 511–526.

DOI: 10.1016/s1359-8368(99)00071-2

[10] Sang-Eui Lee, Ji-Ho Kang, Chun-Gon Kim, Fabrication and design of multi-layered radar absorbing structures of MWNT-filled glass/epoxy plain-weave composites, Compos. Struct. 76 (2006) 397–405.

DOI: 10.1016/j.compstruct.2005.11.036

[11] Peled A, Mobasher B, Cohen Z. Mechanical properties of hybrid fabrics in pultruded cement composites[J]. CEMENT & CONCRETE COMPOSITES, 2009, 31(9): 647-657.

DOI: 10.1016/j.cemconcomp.2009.06.002

[12] Wright T H A T. Mechanical properties of aramid fibre-reinforced acrylic bone cement[J]. Journal of Materials Science, 1979, 14: 503-505.

DOI: 10.1007/bf00589852

[13] S.M. Abbas, A.K. Dixit, R. Chatterjee, T.C. Goel, Complex permittivity and microwave absorption properties of BaTiO3–polyaniline composite, Mater. Sci. Eng. B-Adv. 123(2005) 167–171.

DOI: 10.1016/j.mseb.2005.07.018

[14] H.T. Guan, S.H. Liu, Y.P. Duan, Y. B. Zhao, Investigation of the electromagnetic characteristics of cement based composites filled with EPS, Cement Concrete Comp. 29 (2007) 49–54

DOI: 10.1016/j.cemconcomp.2006.08.001

[15] Yuping Duan, Shunhua Liu, Bin Wen, Hongtao Guan, Guiqin Wang, A Discrete Slab Absorber: Absorption Efficiency and Theory Analysis, J. Compos. Mater. 40 (2006) 1841-1851.

DOI: 10.1177/0021998306060174