Geomechanics and Engineering

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Braided composite rods: Innovative fibrous materials for geotechnical applications

  • Fangueiro, Raul (Department of Civil Engineering, University of Minho) ;
  • Rana, Sohel (Department of Civil Engineering, University of Minho) ;
  • Gomes Correia, A. (Department of Civil Engineering, University of Minho)
  • Received : 2012.08.16
  • Accepted : 2012.12.20
  • Published : 2013.04.25
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Abstract

In this paper, a novel fibrous material known as axially reinforced braided composite rods (BCRs) have been developed for reinforcement of soils. These innovative materials consist of an axial reinforcement system, comprised of longitudinally oriented core fibres, which is responsible for mechanical performance and, a braided cover, which gives a ribbed surface texture for better interfacial interactions with soils. BCRs were produced using both thermosetting (unsaturated polyester) and thermoplastic (polypropylene) matrices and synthetic (carbon, glass, HT polyethylene), as well as natural (sisal) core fibres. BCRs were characterized for tensile properties and the influence of core fibres was studied. Moreover, BCRs containing carbon fibre in the core composition were characterized for piezoresistivity and strain sensing properties under flexural deformation. According to the experimental results, the developed braided composites showed tailorable and wide range of mechanical properties, depending on the core fibres and exhibited very good strain sensing behavior.

Keywords

References

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