Modern concrete starts cracking within decades, yet Roman harbours and domes have survived two thousand years of waves and weather. For centuries the recipe looked lost. In 2023 a team at MIT found the answer hiding in tiny white flecks that everyone had dismissed as sloppy work, the lime clasts behind Roman concrete self-healing.
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The secret is not driving thousands of multi-ton trucks over it every day.
If you read the article, It’s has nothing to do with motorways which the Romans didn’t build and require steel reinforced concrete, anyway. And, you’ll learn that the Roman concrete is not stronger than modern concrete, only more durable.
Its actually interesting. If you’re done snarking, it’s worth a read.
