5 ms·
This would never be possible in the UK. Rainwater and sea spray would corrode any exposed rebar away within a few years. In fact, I wonder whether it is such
by periheli0n 5y ago
This would never be possible in the UK.
Rainwater and sea spray would corrode any exposed rebar away within a few years.
In fact, I wonder whether it is such a good idea to build on rebar that has been exposed to the environment for an extended period of time.
- pentae 5y agoYou can wrap it in plastic and this is a non issue
- infoaddicted 5y agoMy experience living on a Florida key gives me the intuition that that is false, unless by wrap you mean seal
- DrAwdeOccarim 5y agoI was unaware of how incredibly destructive the combination of daily, continuous, direct sunlight, humidity, and salt water was until my parents moved to Florida. It's really incredible. A few years and literally every material is mottled and crispy.
- seg_lol 5y agoThe entire state of Florida should be a nature preserve, maybe it already is.
- WalterBright 5y agoPlastic doesn't hold up well to sunlight.
- jspash 5y agoBut if there is never good intention to actually "finish" the construction, then it wouldn't matter much.
- periheli0n 5y agoTrue, but still, moisture can creep in where rebar exits the concrete, and lead to rebar corrosion inside the structure. Less of a problem in Egypt than in the UK or similar climates.
- londons_explore 5y agoOne could always paint the exposed rebar to protect it.
- periheli0n 5y agoThe point of sealant is that it won’t come off easily. But rebar with painted-on sealant is most likely less able to properly attach to concrete. Therefore, it might be difficult to use properly sealed rebar for further construction?
- meowster 5y agoGrind it off or use some kind of paint remover.
- londons_explore 5y agoWorst case I guess you could use paint stripper on it before use? But I expect rebar-sealer exists for exactly this use...
- periheli0n 5y agoRebar sealant would only help if the entire rebar is sealed, not just the exposed bit, since moisture will creep in where the rebar exits the concrete. And even then, moisture inside the concrete wall may well cause other problems in the long term.
- Accujack 5y agoOr just use non metallic rebar (basalt)
- baybal2 5y agoNot a good idea. Paint on the rebar will severely weaken the concrete adhesion in just a few years. Construction codes in a number of countries prohibit that.
- FridayoLeary 5y agosea spray? Britain isn't a narrow coastal strip.
- ddkto 5y agowhen people actually care about protecting the starter bars (exposed rebar to star the next floor), you can cast a very weak concrete (1-2 MPa crushing strength) around them. When construction continues, you just chip out the weak concrete, clean the bars with a wire brush and carry on.