An entire building rests on a metal structure, which is why the structure needs to undergo anti-corrosion treatment for durability and strength. This treatment is done when the building is newly made.
Chemicals like zinc epoxy primer, polymer cement base material and others are used for this purpose.
Usually, these chemicals are polymer cement based material applied over the metal rods. Corrosion is almost impossible even when in contact with water, with metal rods treated with anti-corrosive chemicals. This is because it is a lifelong treatment.
Even if the interior metal structure does not undergo anti-corrosion treatment, home remodelling contractors recommend treating the exposed rods with anti-corrosion treatment to protect the structure.
For anti-corrosion, in the basic step, the metal rods are at first treated with zinc based rust pacifier. This zinc reacts with peroxide of the metal to form zinc oxide, which acts as a coating. Later, a cement based polymer is applied.
It is then painted over the metal structure treated with zinc.
After this, concrete is applied to the treated metal structure. Concreting is done from below the structure. For homes, a skilled mason can handle it, but home remodelling contractors state that highly affected areas need guniting or short cutting, done with a machine named Gunit. The compressor in this machine helps apply concrete with a greater force. This is carried out in heavy-duty construction projects, such as, for bridges, flyovers and other high structures.
In the case of a badly damaged slab, just plaster won’t work. In such a case, home remodelling contractors might ask you to consider guniting process.
Tunnels and chimneys are also made in a similar fashion.