Non-destructive monitoring of fiber orientation using AC-IS: An industrial-scale application

Nilufer Ozyurt*, Thomas O Mason, Surendra P Shah

*Corresponding author for this work

Research output: Contribution to journalArticle

77 Scopus citations

Abstract

A comprehensive study has been undertaken to investigate the ability of AC-impedance spectroscopy (AC-IS) to non-destructively monitor the fiber dispersion of conductive fiber-reinforced cement-based materials. Previous work showed that AC-IS effectively monitors various fiber dispersion issues in lab-scale steel fiber-reinforced specimens. In this part of the study, AC-IS was used to study fiber orientation in an industrial-scale pre-cast concrete beam. A conventional method-image analysis (IA)-was used to verify the results of AC-IS measurements. The results of AC-IS and IA were found to match very well in experimental uncertainty. Splitting tensile tests and bending tests were conducted on the parts of the beam to study the effects of fiber orientation on the mechanical performance. The results of the mechanical tests also confirmed the results of AC-IS with splitting tensile strengths increasing as the alignment of fibers increased.

Original languageEnglish (US)
Pages (from-to)1653-1660
Number of pages8
JournalCement and Concrete Research
Volume36
Issue number9
DOIs
StatePublished - Sep 1 2006

Keywords

  • Dispersion
  • Fiber reinforcement
  • Image analysis
  • Mechanical properties
  • Spectroscopy

ASJC Scopus subject areas

  • Building and Construction
  • Materials Science(all)

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