Rediscovering Roman concrete with perfect timing to rebuild the Reich.

https://news.mit.edu/2023/roma....n-concrete-durabilit

Riddle solved: Why was Roman concrete so durable? | MIT News | Massachusetts Institute of Technology
news.mit.edu

Riddle solved: Why was Roman concrete so durable? | MIT News | Massachusetts Institute of Technology

Researchers have discovered ancient Roman concrete-manufacturing strategies that incorporated self-healing. Applying this knowledge toward modern cement production, they hope to improve the material’s environmental impact.