Preventing Further Steel Corrosion
Preventing Further Steel Corrosion
(OP)
Hi guys,
I am currently doing some renovation work where I am checking the structural adequacy of an suspended walkway that has undergone some corrsion.
What measures can I take to ensure that any further corrsion is minimised in the future.
I am currently doing some renovation work where I am checking the structural adequacy of an suspended walkway that has undergone some corrsion.
What measures can I take to ensure that any further corrsion is minimised in the future.






RE: Preventing Further Steel Corrosion
RE: Preventing Further Steel Corrosion
RE: Preventing Further Steel Corrosion
The corrosion is particularly severe in places, the base plate was initially 10mm thick (3/8") and has corroded down to 6mm (2/8").
RE: Preventing Further Steel Corrosion
You could try wheelabrading with mechanical wire brush followed by a 'surface tolerant' primer. Those primers tolerate steel surface in less than ideal conditions.
But if you say that the plate has corroded so much, that means that the environment is not ideal. So the better a job you can do, the more corrosion protection you will get.
In any case, independently of what you decide, it is also very important to carry out regular, proper maintenance on the walkway, reparing and touching up any future paint damage or degradation. That, in my opinion, is critical.
RE: Preventing Further Steel Corrosion
Properly applied coatings are great, but reducing the moisture makes them more efficient.
RE: Preventing Further Steel Corrosion
RE: Preventing Further Steel Corrosion
Apply zinc rich primer, Apply intermediate epoxy stripe coate to all sharp corners by brush. Apply epoxy intermediate coat. Apply polyurethane top coat. Paint manufacturer's will be glad to give you a standard coating system and required dry film thicknesses.
Pay attention to any reactive metals. Is say stainless steel grating on carbon steel members? This could promote corrrosion of the carbon steel.
Visit the NACE website for further information on standards etc. (National association of corrosion engineers).