Roman Concrete in the Port of Caesarea

Record summary

Herod the Great’s harbor at Caesarea Maritima is a major case for studying Roman marine construction. Engineers used hydraulic concrete, volcanic ash, aggregate, and large breakwater structures to create an artificial harbor exposed to Mediterranean forces. It matters for comparison with other ancient coastal engineering and for testing how material recipes, labor organization, and local geology shaped maritime infrastructure. Harbor damage, later rebuilding, and uncertain original layouts complicate interpretation. Recent materials research examines mineral growth and durability, but modern analogies should not be treated as proof of a single universal Roman formula.