Prediction of Steel Corrosion Portion and Area by Natural Potential Measurement

Koyama, Rie; Yajima, Tetsuji; Uomoto, Taketo; Hoshino, Tomio

doi:10.2208/jscej.1996.550_13

Cited by 4 publications

(1 citation statement)

References 3 publications

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“…Thus, in order to calculate the corrosion current density by the measured half-cell potential, it is unreasonable to directly utilize the ohmic rule with the difference of half-cell potential shown in Fig. 5 and the specific resistance of concrete (Koyama et al 1996). In other words, the corrosion current density calculated by the measured half-cell potential between two elements is different from the current density illustrated in Fig.…”

Section: Proposal For Multi-circuit Modelmentioning

confidence: 96%

Simulation of Steel Corrosion in Concrete Based on the Model of Macro-Cell Corrosion Circuit

Maruya

Takeda

Horiguchi

et al. 2007

ACT

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A comprehensive numerical simulation system is proposed for solving the problem of steel corrosion in concrete related to deterioration of reinforced concrete structures in an environment contaminated by chloride ions. The distribution of the corrosion amount and the corrosion rate along the reinforced bar were calculated based on macro-cell circuit models consisting of micro-cell circuits. The models were quantified according to the results of exposure experiments under two environments, one under cyclic wetting and drying in a laboratory and the other in a splash zone located offshore. The comparisons on time-dependent half-cell potential, corrosion location and corrosion amount indicate qualitative coincidence between the experimental and numerical simulation results. In addition, based on the proposed system, numerical simulation of the macro-cell corrosion circuit between patched area and not-yet-patched area is reasonably achieved.

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Section: Proposal For Multi-circuit Modelmentioning

confidence: 96%