How corrosion influences concrete reinforcement

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How corrosion influences concrete reinforcement

Corrosion control is something many concrete users struggle with. The last thing you want is to have your structure fall apart not long after erecting it. As luck would have it, we have plenty of experience in this area. You can use our high calibre solutions to give your buildings optimal protection.

Corrosion in concrete reinforcement is no laughing matter. The material itself has two main protection systems to safeguard steel rebar. The first is to erect a barrier. This will prevent the steel from encountering the outside environment. The other is to create a hugely alkaline setting where steel doesn’t corrode.

When the construction is complete, concrete will face numerous elements in its service life. There could be a habitat with chlorine in it. It won’t influence the concrete but it will corrode the steel reinforcement. Chlorine must penetrate the surface to affect the steel though. You can use corrosion control to prevent this from occurring.

Corrosion happens in several stages

Eventually, the steel begins corroding. When it does, the reinforced concrete starts degrading moderately. This happens in a series of stages. Firstly, we have the emergence of white patches. Calcium hydroxide within the cement paste reacts with atmospheric carbon dioxide. This produces calcium carbonate. Brown patches start showing up along the reinforcement too.

Not long after, cracks begin forming. Then, the concrete will spall. It begins to generate a myriad of layers of scales. In time these will peel off. Next, the bars will snap. This happens because the corrosion weakens the material and reduces the size. Finally, the bars shall start buckling. This is the result of the bar snapping and the spalling of the cover.

At Churchill Concrete Technology, we provide unique corrosion control treatment for every client. Our team works this way because there is no general protection method. Every project comes with its own challenges. What worked in one instance may be ineffective in another. To get the best results we check the concrete, the conditions on the site, and various other factors. All of these details shape our service.

If you would like our help, please contact us.