Not trying to just jump in an correct you, but there has actually been progress recently made in this area and we're starting to get a scientific understanding

Not trying to just jump in an correct you, but there has actually been progress recently made in this area and we're starting to get a scientific understanding of what the Romans learned to do presumably through trial and error. Here's an article I found on the subject, https://www.theguardian.com/science/2017/jul/04/why-roman-concrete-still-stands-strong-while-modern-version-decays https://www.theguardian.com/science/2017/jul/04/why-roman-co...