T. Maruya, H. Takeda, K. Horiguchi, S. Koyama
and K.-L. Hsu
Journal of Advanced Concrete Technology, 5(2) 343-362, 2007
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.