Biaxial Compression in Carbon-Fiber-Reinforced Mortar, Sensed by Electrical Resistance Measurement

Health monitoring of a structure is important for hazard mitigation, whether the damage is due to use, earthquake, wind, or ocean waves. Carbon-fiber reinforced cement composite is capable of sensing its own stress/strain due to the effect of stress/strain on the electrical resistance. This article reports on a study of the stress-sensing behavior of carbon-fiber-reinforced mortar under biaxial and uniaxial compression. With both uniaxial and biaxial compression, with an increase in the compressive stress, the fractional change in resistance in any direction decreases gradually at first, and then increases with increasing stress. But the critical stress varies with the loading style and the direction in which the resistance is measured. In addition, the piezoresistivity of carbon-fiber-reinforced mortar under biaxial compression is more sensitive than that under uniaxial compression.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00088846
• Authors:
  • Wu, Bo
  • Huang, Xiao-Ji
  • Lu, Jin-Zhong
• Publication Date: 2005-7

Language

• English

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 1430-1434
• Serial:
  • Cement and Concrete Research
  • Volume: 35
  • Issue Number: 7
  • Publisher: Elsevier
  • ISSN: 0008-8846
  • Serial URL: http://www.sciencedirect.com/science/journal/00088846

Subject/Index Terms

• TRT Terms: Axial compression; Carbon fibers; Cement mortars; Electrical properties; Electrical resistivity; Fiber composites; Mortar; Stresses
• Subject Areas: Highways; Materials; I32: Concrete;

Filing Info

• Accession Number: 01002286
• Record Type: Publication
• Files: TRIS
• Created Date: Jul 22 2005 7:17AM