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RE: What Have The Romans Ever Done For Us?
June 30, 2016 at 6:19 pm
Galvanized iron/steel is a layer of zinc. As it turns out, zinc reacts with concrete, so galvanized iron in contact with concrete needs an additional layer of protection.
I have a galvanized farm structure and we put latex paint on the galvanized surface where it came into contact with the concrete foundation.
It is possible for some types of aggregate added to concrete to chemically react with the cement too. IIRC, there is an interstate in Kentucky or Tennessee that is disintegrating from this problem.
Concrete is an unusual material in several ways. Most rocks are poor conductors of electricity, concrete is much better, not on par with metal, but for something made of various powdered rocks essentially, it is surprisingly conductive.
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RE: What Have The Romans Ever Done For Us?
June 30, 2016 at 7:12 pm
(June 30, 2016 at 1:46 pm)Mr.wizard Wrote: Well you cant expect them to compete with all the Alien technology they had back then.
Does it annoy anybody else that that idiot looks like Viiiiiiiiir Cotto in that meme.
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RE: What Have The Romans Ever Done For Us?
June 30, 2016 at 7:20 pm
(June 30, 2016 at 5:17 pm)Rhythm Wrote: No such thing as rust proof, particularly over the spans of time being considered. Think of it like this...oxygen proofing, and good luck.
Well, some of the bronze alloys come pretty damned close.
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‘But it does me no injury for my neighbour to say there are twenty gods or no gods. It neither picks my pocket nor breaks my leg.’ - Thomas Jefferson