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We Finally Know How Ancient Roman Concrete Was Able to Last Thousands of Years
(www.sciencealert.com)
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this post was submitted on 01 Feb 2024
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let me guess, the didn't fill it with iron that would corrode and expand and blow out the concrete? or the fact that it has an excess of fired lime that re-seals cracks?
Yep, it’s the the lime. And: “ The team is now working on commercializing their concrete as a more environmentally friendly alternative to current concretes.”
Quick lime as a 'concrete' is nothing new, or newly rediscovered though... The story seems to come up every few years, and anyone that has used a fluidised lime boiler knows how good quick lime is at forming concrete.
Yeah, I was thinking it's like the "Voyager Has Left the Solar System" story - we've heard that several times over the years, and probably will again.
To be fair, we keep expanding what we class as the solar system. Poor old voyager keeps getting the goalposts moved!
The year is 76,014. Voyager still hasn't left the solar system. Also, the solar system now contains Proxima Centauri.