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A comment on How Has Roman Concrete Lasted for Millennia? 1,900-Year-Old Latrine Offers Clues. Parent comment

Re:How Has Roman Concrete Lasted for Millennia? 1,900-Year-O... by poelzi on Monday July 20, 2026 @08:30AM (#48977907)
The trick was: Lime CHUNKS, proper volcanic fly ash, salt water + no steel. Self repairing and more flexible
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