Research on Conductive Property of Carbon Fiber/Carbon Black-Filled Cement-Based Composites

Yan Ting Du; Ran Ran Zhao; Jin Qiu Dong

doi:10.4028/www.scientific.net/AMM.182-183.144

Paper Titles

Influence of Heat Treated Temperature on the Photoactivating Property of Nanometer ZnO/SnO₂ Powder
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Influence of Fe and Co and Cr Doped Amount on the Photoactivating Property of Nanometer ZnO Powder
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The Mechanical and Tribological Properties of Carbon Fiber Reinforced POM Composites
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Investigation on the Dispersion of SiC Nanoparticles in Rubber Matrix
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Research on Conductive Property of Carbon Fiber/Carbon Black-Filled Cement-Based Composites
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Quasi-Static Tensile Properties and Damage Mechanism of Three-Dimensional Angle-Interlock Woven Composites
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Study on the Structure and Properties of Novel Impact Resistance Fabric Composites
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Production of V(C,N) Reinforced Iron Matrix Composites
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Microstructure and Mechanical Properties of Al-12.6%Si Composite Reinforced by Al₆₃Cu₂₅Fe₁₂Quasicrystal
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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 182-183Research on Conductive Property of Carbon...

Research on Conductive Property of Carbon Fiber/Carbon Black-Filled Cement-Based Composites

Abstract:

Electrical conductive carbon-modified cement-based composites are important multi-functional structural material. Double compounding carbon fiber and carbon black into cement-based material can improve the electrical conductive property of cement-based composites. In this paper, the influences of carbon fiber ratio and total volume fraction of carbon components on the resistivity of cement-based composites are investigated. The results show that both carbon fiber ratio and total volume fraction have great effect on the conductive behavior of carbon-modified cement-based material. At a fixed carbon fiber ratio, with the increase of total volume fraction, the resistivity of cement-based composites drops down dramatically and shows obvious percolation phenomenon. The reason is that with more and more conductive particles and fibers added into the cement material, the conductive components connect with each other gradually and at certain point reach the percolation threshold. At a fixed total volume fraction, the resistivity drops down with the increase of carbon fiber ratio. This is because that the carbon fiber has larger aspect ratio than carbon black, so carbon fiber could get lower resistivity with the same dosage according to the percolation theory. Finally, the results show that with 0.5 carbon fiber ratio and 2% total volume fraction the carbon-modified cement-based composites have relatively low resistivity, high workability and high compressive strength.