Buildings built with concrete in ancient Rome continue to stand firm to this day. This has spurred many researchers to look for the key to Rome's success with concrete in the early days, and we may ...

Across the Mediterranean, hulking Roman harbors, aqueducts and amphitheaters still stand where modern concrete would have crumbled. After years of debate, a convergence of new lab work, field studies ...

Nobody knows who did it first or when. But by the 2nd or 3rd century B.C.E., Roman engineers were routinely grinding up burnt limestone and volcanic ash to make cementum: a powder that would start to ...