https://news.ycombinator.com/item?id=27282927 https://news.ycombinator.com/item?id=27282927 Here’s a thread from 6 months ago where there is significant discus

https://news.ycombinator.com/item?id=27282927 https://news.ycombinator.com/item?id=27282927 Here’s a thread from 6 months ago where there is significant discussion about why concrete is used the way it is today. Those parameters/considerations differ from those that the Romans would have faced. And, again, we only have the best examples of Roman cement today available for analysis versus the very wide range of construction quality that occurs today. The very article linked also explains some of the limitations/ways in which Roman cement isn’t ideal/superior - for one, the massively longer curing time.