2007-02-27 06:33:54 · 8 answers · asked by Toy 1 in Home & Garden ➔ Do It Yourself (DIY)
It's not a problem. On any large construction site, you'll see re-bar stacked up outside all the time. (It's lovingly called the 'rod patch', where all rookie apprentice Ironworkers start out.)
Concrete does not "bond" to reinforcing bar, but the "divots" in the bar (the real name for it is 'deformed bar') prevent it from moving in cured concrete.
2007-02-27 06:42:07 · answer #1 · answered by Hank 3 · 2⤊ 0⤋
No. Rust is actually a good thing. And I for one have never heard of re-bar rusting through or getting weakened from rust. It would have to sit out in the damp for many years. I have also never seen non rusty re-bar at a site, not sure I have ever seen it in new condition, ever. When we buy it, it's already rusted.
2007-02-28 01:24:49 · answer #2 · answered by annigoodhere 3 · 0⤊ 0⤋
It depends upon how much 'rust' there is on your re-bar. If it's just a 'thin coating' it shouldn't hurt your wall ... if it is 'thick enough' to get into the 'holding strength' of the re-bar, then you should buy new 're-bar' because the 'rusty re-bar' could 'break' in the wall and actually 'cause it to collapse' ... try 'breaking' a piece of re-bar that is 'rusty' ... make it two feet long, and try 'breaking it' at it's rustiest point ... if you can break it 'by hand' alone, it's way too rusty ... if you can't break it without actually 'cutting into it' it's fine ...
2007-02-27 14:44:21 · answer #3 · answered by Kris L 7 · 0⤊ 0⤋
A little rust is good. That means all the factory oil is gone. Concrete will bond to the steel. If the steel is clean, that means the re-bar is still oily. Concrete won't bond to oil.
2007-02-27 21:19:56 · answer #4 · answered by Ayla B 4 · 1⤊ 0⤋
No. Re-bar isn't coated, and usually, by the time you purchase it, it has some suface rust from moisture in the air, if nothing else. It's not to worry about, lest it's 10 year old exposure.
2007-02-28 02:21:57 · answer #5 · answered by Anonymous · 0⤊ 0⤋
Every job i'm on has always got some rebar showing somewhere .Its inherent that it stays out in the elements..
Rust ain't gonna hurt your steel. some big jobs have the steel tied down for months before the concrete is poured..I've stuck enough conduits under slabs to know...
2007-02-27 22:04:48 · answer #6 · answered by backyard_tire_biter 3 · 0⤊ 0⤋
If it is skim rust no problem, if it is pitted it depends on how bad and try to remove as much rust as poss able before use.
2007-02-27 15:40:02 · answer #7 · answered by zipper 7 · 0⤊ 0⤋
No
2007-02-27 17:04:13 · answer #8 · answered by daffyduct2006 6 · 0⤊ 0⤋