Why Corrosion In Voids Is So Dangerous

  • Post author:
  • Post category:News
  • Post comments:0 Comments

Corrosion can cause serious damage to all kinds of structures and it can lead to expensive repairs if it is left too long without action being taken.

As an article for Engineer Live recently noted, one of the most damaging forms of corrosion is that which occurs in complex internal cavities and voids within structures. These spaces often contain structural steel components or high-value equipment modules.

The challenge is that when corrosion occurs in these areas it can be difficult to identify and often near impossible to remedy.

These spaces within structures and buildings are difficult to access, not to mention being integral to a structure, which is what makes it so hard to repair them once corrosion occurs. A better approach is to prevent this from the outset as far as possible.

One option is to use a vapour phase corrosion inhibitor, which can be used to protect various types of metal from corrosion in these void spaces.

Other options to prevent corrosion in all manner of structures include different forms of cathodic protection. This process involves coating the steel with another metal that can be ‘sacrificed’ to provide protection to the underlying structure.

As we recently explained, there are two main ways in which this can be performed. The first, galvanic, involves coating steel in zinc and allowing the zinc to rust instead. However, this doesn’t always provide long-term results.

The other is impressed current cathodic protection, whereby a perpetual source of electrical flow allows the coating material to last much longer and therefore provide protection for a much longer period of time.

Leave a Reply