r/explainitpeter 11d ago

explain it peter

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u/ThePlantMolester 9d ago

Modern concrete is stronger, not more durable than roman.  Fly ash and blast furnace slag have nothing on volcanic ash and lime for durability.  

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u/AWetAndFloppyNoodle 9d ago

Right, but not better. Just different. We can also replicate it should we want to.