Which are the possible influencing parameters for the corrosion of steel reinforcement in concrete in marine structures?
The corrosion of steel reinforcement in concrete is complex, but basically, it is an electrochemical reaction similar to that of a simple battery.
The factors which generally influence the corrosion of reinforcement in RC structures are:
When reinforcement starts corroding, a layer of ferric oxide is formed on the reinforcement surface.
This brown product resulting from corrosion may permeate along with moisture to the concrete surface without cracking the concrete.
Usually cracking of the concrete occurs shortly thereafter.
The continued reduction in the size of the bars results in the snapping of the bars.
Usually snapping occurs in ties/stirrups first.
At this stage, there will also be a considerable reduction in the size of the main bars.
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