rebar - why is mild steel okay?
Newshound wrote:
I think you are all worrying about nothing. There's a recommended minimum
depth below the surface and once you are there very little happens because
the concrete will stay alkaline for a long time. Even sub-sea structures
like pier columns last a long time with mild steel rebar.
Indeed. Because concrete is air and water proof if done correctly.
There have been concrete ships built before now..
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