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Roman concrete's 2,000-year durability secret finally decoded
The exceptional strength comes from 'hot mixing' quicklime directly with volcanic ash at high temperatures. This creates distinctive lime clasts that grant remarkable self-healing properties - when cracks form, water reacts with these clasts to form calcium carbonate that naturally repairs damage. Science Alert https://buff.ly/3EQOcxi
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ScienceAlert · We Finally Know Why Ancient Roman Concrete Was So DurableThe ancient Romans were masters of building and engineering, perhaps most famously represented by the aqueducts.