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?