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‹Roman concrete↗

ANCIENT BUILDING MATERIAL

Roman concrete

A material used in construction during the late Roman Republic and Empire.

Roman concrete was based on a hydraulic-setting cement. It is durable due to its incorporation of pozzolanic ash, which prevents cracks from spreading.

The interior of the Pantheon in Rome

Historical references

Vitruvius described four types of pozzolana. The material changed what Roman builders could imagine.

AaType◇Save⑂Trail▣Open
A POSSIBLE PATHPozzolanaVolcanic ash that reacts with lime in the presence of water.

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01

Roman concrete

A material that outlasted an empire

02

Pantheon, Rome

The world’s largest unreinforced concrete dome

03

Hadrian

An emperor, architect, and tireless traveler

04

Antinous

A life that became a mystery and a cult

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