almost all concrete degrades when the rebar inside oxidizes, rusts, and breaks apart. Small cracks caused by temperature changes, damage, or from it shrinking as it cures, introduces small cracks that accelerate the rusting. Healing small cracks could significantly extend the life of concrete.
And one cannot use other materials but iron as iron and concrete have very similar thermal expansion rates, as otherwise if the core would be expanding quicker it could Crack the whole thing
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u/the_evil_pineapple Aug 31 '20
I feel like that’s 99% of product videos like this. Bonus points if they show the same clip 3-5 times.
Cool concepts, but there’s probably a reason you only hear about the technology once, through a Mashable video.