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How does FRC enhance the sustainability of concrete structures?

in Concrete Technology by  

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Low permeability under loading: rapid increase in the permeability occurred for plain concrete under stress; increase remained small for the FRC. Higher Corrosion Resistance of rebars: Reasons:

  1. Smaller crack widths in FRC impede the conductive chloride ions to come into direct contact with the steel rebar
  2. Steel fibers close to the rebar surface provide a source of passive confinement, which hinders the development of expansive corrosion products
  3. Oxygen required for cathode reaction is consumed by the corrosion of steel fibers placed near the concrete surface



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