2,050-year-old Roman tomb offers insights on ancient concrete resilience
The civil engineering-oriented channel Practical Engineering has a pretty good video on Roman concrete vs. modern.
<a href="https://www.youtube.com/watch?v=qL0BB2PRY7k" rel="nofollow">https://www.youtube.com/watch?v=qL0BB2PRY7k</a><p>The primary tldw; is the fact modern concrete uses steel rebar for tensile strength, whereas the Romans relied on architectural techniques to minimize tensile forces on their structures.<p>Steel rebar is the primary route through which concrete deteriorates.