The corrosion of structural steel is an electrochemical process that requires the simultaneous presence of moisture and oxygen. Essentially, the iron in the steel is oxidised to produce rust, which occupies approximately six times the volume of the original material.
How do you protect structural steel from corrosion?
There are three methods that may be used to protect steel from corrosion.
- Passive Barrier Protection. ...
- Active Protection. ...
- Sacrificial Protection (Cathodic Protection or Galvanic Protection) ...
- 3.1 Electrocoat (E-coat) ...
- 3.2 Metallic Coatings. ...
- 3.3 Organic Coatings. ...
- 3.4 Powder Coatings.
Is structural steel corrosion resistant?
Hot-dip galvanisation of structural steel components exposed to atmospheric conditions constitutes a highly effective durable corrosion protection method. In many applications, the corrosion protection lasts as long as the structure itself. Zinc coatings require no or almost no maintenance.
