Spatial variability of pitting corrosion and its influence on structural fragility and reliability of RC beams in flexure

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Three-dimensional corrosion pit measurement and statistical mechanical degradation analysis of deformed steel bars subjected to accelerated corrosion (2014, background): “This randomness increases the failure probability of corroded RC members as the corroded bar may fail at cross sections that are not subjected to the maximum load [8–10].”
Pitting corrosion and structural reliability of corroding RC structures: Experimental data and probabilistic analysis (2008, neutral): “Stewart [12] proposed a stochastic model of pitting corrosion for a simply supported RC office floor beam.”
Probabilistic lifetime assessment of RC structures under coupled corrosion–fatigue deterioration processes (2009, background): “(24): AsðacÞ ¼ 1 fy df 0cb ffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffi ðdf 0cbÞ 2 2f 0cbMeðxÞ q ð26Þ Depending on a supposed shape for the crack or the pit, ac is obtained from Eq.”
Mechanical behaviour of pitting corrosion of flexural and shear reinforcement and its effect on structural reliability of corroding RC beams (2009, methodology): “The understanding of this phenomena is incomplete, with recent reliability studies assuming values of LU varying from 100 mm to over 1000 mm [12–14].”