Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Intrinsic Conductivity of Short Conductive Fibers in Composites by Impedance Spectroscopy

Published

Author(s)

A D. Hixson, L Y. Woo, M A. Campo, T Mason, Edward Garboczi

Abstract

Electrical property measurements (DC conductivity, impedance spectroscopy) were employed to determine the intrinsic conductivities of short conductive fibers in cement matrix composites. Intrinsic conductivity determines the variation of overall conductivity (DC or AC) vs. volume fraction of fibers. Model composites consisting of steel wires (0.5 mm diameter), but with aspect ratios comparable to typical carbon or steel fibers used in cement/concrete, were shown to exhibit similar dual arc impedance spectra as observed in actual composites. The results were compared with existing exact calculations for composites with randomly distributed right cylinders. The conductivity vs. aspect ratio behavior can be used to estimate the aspect ratio in randomly distributed fiber composites.
Citation
Journal of Electroceramics
Volume
7
Issue
No. 3

Keywords

cement, composites, electrical conductivity, fibers, impedance

Citation

Hixson, A. , Woo, L. , Campo, M. , Mason, T. and Garboczi, E. (2001), Intrinsic Conductivity of Short Conductive Fibers in Composites by Impedance Spectroscopy, Journal of Electroceramics, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=860363 (Accessed June 2, 2023)
Created November 30, 2001, Updated October 12, 2021