Multifunctional Braided Composite Rods for Civil Engineering Applications

  • Zdraveva E
  • Gonilho-Pereira C
  • Sousa Fangueiro R
 et al. 
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This paper presents the development of a braided reinforced composite rod (BCR) able to both reinforce and monitor the stress state of concrete elements. Carbon fibers have been used as sensing and reinforcing material along with glass fiber. Various composites rods have been produced using an author patented technique based on a modified conventional braiding machine. The materials investigated were prepared with different carbon fiber content as follows: BCR2 (77% glass/23% carbon fiber), BCR3 (53% glass/47% carbon fiber), BCR4 (100% carbon fiber). BCRs have been tested under bending while the variation of the electrical resistance was simultaneously monitored. The correlations obtained between deformation and electrical resistance show the suitability of the rods to be used as sensors. The fractional resistance change versus strain plots show that the gage factor increases with decreasing carbon fiber content. © (2010) Trans Tech Publications.

Author-supplied keywords

  • Braiding
  • Composites
  • Concrete
  • Corrosion
  • Electrical resistance
  • Monitoring
  • Reinforcing
  • Self-diagnosing structural materials

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  • Emilijia Zdraveva

  • Cristiana Gonilho-Pereira

  • Raul Manuel Esteves Sousa Fangueiro

  • Senentxu Lanceros-Méndez

  • Saíd Jalali

  • M. Araújo

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