You go from nitrogen to tone policing? That escalated quickly.
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I just stumbled on a cool recent YouTube video that adds another twist to the Roman Concrete story.
With all the side trips this thread has taken, might be nice to bring it back to the OP and this rather fascinating story.
Apparently mixing method was another essential ingredient to making self-healing concrete.
Mar 23, 2023 - Ancient Marvels
In the video today we are looking at the amazing ways in which the Ancient Romans made concrete that could last 1000s of years, and even get stronger over time in conditions that normally destroy concrete rapidly. So how did they do it?
