Ancient Technology Revealed: Roman Concrete in the Venetian Lagoon

A Timeless Legacy Beneath the Waves

Archaeologists have discovered an incredible connection between ancient Roman engineering and Venetian heritage. A submerged 1st-century AD Roman hydraulic structure in the Venetian Lagoon reveals the use of volcanic ash, pulvis puteolana, from the Phlegraean Fields near Naples. This ash gave Roman concrete extraordinary strength, allowing it to survive underwater for centuries.

Recent research by the universities of Padua, Venice and Modena has found the material in mortar samples from a well submerged more than 3 metres deep in the San Felice Canal. Advanced laboratory techniques, including laser ablation and geochemical analysis, have confirmed the volcanic origin of the ash, matching the descriptions of Vitruvius and Pliny the Elder. These findings highlight the innovative architectural adaptation of Roman knowledge to the unique environment of the Venetian lagoon.

Innovative construction: Roman engineers used pulvis puteolana to create strong structures capable of withstanding harsh underwater conditions.

Technological legacy: This discovery highlights the remarkable continuity of Roman engineering principles in Venetian architecture.

Advanced analysis: Advanced techniques have allowed the precise identification of the volcanic material, further strengthening the connection to ancient Campania.

Why it matters

This discovery sheds light on the ingenuity of Roman technology and its influence on later civilizations. The adaptation of these techniques by Venetian ancestors demonstrates a seamless blend of innovation and tradition, ensuring resilience against the challenges of a water-dominated landscape.

To learn more from the experts, read the full study published in PLOS ONE.

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