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NW Washington | I will pile on about the importance of a firm compacted base and that the concrete is a good strong and relatively dry mix. Too much water and improper finishing will ruin the job regardless of how much steel you put down. Then stress joints need to be sawn or put into the slab. Fiber in the concrete mix helps too. Then the concrete has to cure properly, which usually means slowly over several days.
Rebar mainly controls cracks. And rusting rebar is one of the primary ways that concrete ultimately fails. The Roman concrete dome of the Pantheon in Rome is going on 2000 years old and it has no cracks and no rebar and I think it is a 142 foot span.
http://en.wikipedia.org/wiki/Pantheon,_Rome | |
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Wire mesh or re-rod for concrete?
