13/10/2026
Roman buildings have stood for 2,000 years. Ours start cracking in 10. ποΈ
The secret was hiding in plain sight: tiny white chunks called lime clasts, long written off as poor mixing. MIT researchers found that when water seeps into a crack, these clasts react and seal it, like natural glue. π©Ή
In lab tests, Roman-style concrete healed its crack in 2 weeks. Modern concrete didn't. π€―
The lesson for today's builders: durability comes from smarter materials, not just stronger ones.
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π Source: MIT, *Science Advances* (2023)
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