Carbon Fiber-Reinforced Cementitious Composites for Tensile Strain Sensing

Carbon fiber-reinforced cementitious (CFRC) sensors were prepared by incorporating carbon fiber (CF) fillers into cement paste. The effect of CF content, cement hydration, and electrode type on electrical resistivity was investigated. Following these preliminary characterization experiments, the response of samples with 15% and 20% volume fraction of CF to tensile loading was examined. Under cyclic loading, resistivity increased reversibly, closely following the changes in tensile strain. Both CF contents exhibited piezoresistive behavior, an essential quality for cement-based strain sensors. While the 15% CF sensors provided a high gauge factor of 1250, the gauge factor for the 20% CF sensors, with a smoother and more repeatable response, was much lower at approximately 20.

• Record URL:
  https://doi.org/10.14359/51689486
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/13846872
• Supplemental Notes:
  • Abstract reprinted with permission from the American Concrete Institute.
• Authors:
  • Azhari, Fae
  • Banthia, Nemkumar
• Publication Date: 2017-1

Language

• English

Media Info

• Media Type: Print
• Features: Figures; Photos; References; Tables;
• Pagination: pp 129-136
• Serial:
  • ACI Materials Journal
  • Volume: 114
  • Issue Number: 01
  • Publisher: American Concrete Institute (ACI)
  • ISSN: 0889-325X
  • Serial URL: https://www.concrete.org/publications/acimaterialsjournal.aspx

Subject/Index Terms

• TRT Terms: Carbon fibers; Cement; Composite materials; Hydration; Repeated loads; Sensors; Structural health monitoring; Tension
• Subject Areas: Bridges and other structures; Highways; Materials;

Filing Info

• Accession Number: 01631593
• Record Type: Publication
• Files: TRIS
• Created Date: Mar 31 2017 12:08PM