Use of a 3D optical measurement technique for stochastic corrosion pattern analysis of reinforcing bars subjected to accelerated corrosion

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Abstract

The 3D corrosion patterns of 23 reinforcing bars subjected to accelerated corrosion are characterised using an optical surface measurement technique. A stochastic signal processing methodology is employed for corrosion pattern analysis of the measured data. The statistical analysis of corrosion pattern data shows that a lognormal distribution model can represent the non-uniform distribution of pitted sections along the corroded bars. It was observed that the frequency of corrosion is independent from the mass loss ratio and the length of the bars. Finally, a set of probabilistic distribution models for the geometrical properties of corroded bars is developed.
Original languageEnglish
Pages (from-to)208-221
Number of pages14
JournalCorrosion Science
Volume73
Early online date18 Apr 2013
DOIs
Publication statusPublished - Aug 2013

Keywords

  • Steel reinforced concrete
  • Modelling studies
  • Pitting corrosion
  • TIME-DEPENDENT RELIABILITY
  • CHLORIDE-INDUCED CORROSION
  • PITTING CORROSION
  • STEEL BARS
  • STRUCTURAL RELIABILITY
  • CONCRETE STRUCTURES
  • MECHANICAL PERFORMANCE
  • RC STRUCTURES
  • BEHAVIOR
  • MODELS

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