First off, this project is free from review from inspectors; i.e. none of this has to be to code.

I want to pour a concrete column. The column isn't structural - it's like a column you may find at the end of a driveway. In my mind, I think I would be better off "anchoring" it so it doesn't slowly migrate downhill. Again, there is no appreciably slope, this is hypothetical (there really isn't a slope, I'm just thinking of reasons why things may move - the more likely cause it getting hit by a bumper, really).

I see post after post talk about the "don't"'s of hammering rebar into the ground and then pouring concrete around it. I understand that the rebar will give moisture a way into your concrete. It will eventually rust and destroy the integrity of your concrete.

The deal is I have six rebar sticking out of the ground right where I want to build a form and pour a column of concrete. Rather than just cut the existing rebar off at the surface, I'd like to utilize them as "anchors" by putting something non-corrosive over top of them and taking advantage of the "staying power" they have to offer.

Can I cover them up with something? Sort of like a rebar condom. Does such a thing exist? Can I use aluminum foil or a plastic tube to protect the concrete from the corrosive rebar?

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    Paint will help some, and it's cheap and easy. "Cold galvanize" zinc paint even better. – Jimmy Fix-it Aug 29 '18 at 1:59
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    From what I have seen in other posts, aluminum and concrete do NOT play well together. So plastic or zinc or possibly some other metal, but not aluminum. – manassehkatz-Moving 2 Codidact Aug 29 '18 at 2:14
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    There is an article dealing with just that issue at structuremag.org/?p=10047 which suggests specific methods for galvanizing, epoxy coating or enameling. There are also spray epoxy paints, e.g. news.thomasnet.com/fullstory/… , though I don't know if they're as effective as fusion-bonded epoxy. – DrMoishe Pippik Aug 29 '18 at 3:48
  • the re-bar is embeedded in what? earth? concrete? rock? – Jasen Aug 29 '18 at 6:53
  • It's in earth. All other comments very helpful! Sounds like I do have options. – harperville Aug 29 '18 at 11:03

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