Hey guys, sorry for the delayed response. I'm settling to recommend the Primer, CTE and Poly Urethane system. I was checking through ISO 12944-5 Table A5. I noticed it had under Primer it had both "primer type" and "binder" i am a bit confused since as far as i know, primers are standalone...
Thanks guys, I think they guys who were in charge of quality checking maintenance works slacked off. Those edge and corner issues seem to me like they were also influenced sloppy sanding and spraying.
anyways I'll try to source a Zinc Rich Primer and Poly Urethane topcoat and add that to the...
sorry about tht.. the post was messed up here are the other pics:
http://img6.imageshack.us/img6/2725/pict1790z.jpg
http://img856.imageshack.us/img856/9586/pict1791.jpg
http://img801.imageshack.us/img801/4472/pict1784gw.jpg
It appears to be cracking and peeling, what do you guys think?
@TomDOT you're referring to a top coat over the CTE or replacing it?
http://imageshack.us/photo/my-images/51/pict1786f.jpg/
Its the Targuard Coal Tar Epoxy from Sherwin Williams being used.
Manufacturer's Specs:
DFT: 400 microns
No of Coats: 2
Mostly Pitting Corrosion is occurring and localized to the top side of the pontoon.
Manufacturer Formula Not Changed.
i get the suspended solids affecting the bottom but the corrosion problem is mostly occurring on the topside. The underside of the pontoons are fairly okay. maybe the application procedures needs to be a little tighter and better surface preparation.
the topside has some gunnels, manholes...
Thanks Gr2. Thermal Spraying is out of the question for my application.. told my boss about that.. he said no he wants a regular spray coating... equipment not available to do thermal spraying. i really wanna know whts a typical lifetime though.. IS 12944 i think said that 2 pack epoxies with...
Apparently Sherwin Williams is still willing to make CTEs though lol.
We've been using this coating for 20 odd years now, my country usually lets cancer off the hook.
Do you know of any other coatings which can yield the same price and performance and CTE though?
Hey Guys, I'm new to the forum.
Currently I'm working on a project where they have a floating bridge with pontoons across a salt water river in Guyana. We're currently using CTE to coat the pontoons (Carbon Steel) and are getting about 4-5 years out of it before the corrosion gets really bad...
