How Sumerians in Mesopotamia Perfected Asphalt-Like Materials 4,000 Years Ago [View all]
23 February 2026
More than 4,000 years ago, long before highways and petroleum refineries, Sumerian craftspeople in southern Mesopotamia were perfecting material formulas that mirror modern asphalt engineering.
A new study published in Journal of Archaeological Science: Reports reveals that artisans at the ancient city of Abu Tbeirah followed precise, repeatable “technological recipes” when producing bitumen-based materials. Their methods—carefully balancing plant fibers, mineral powders, and controlled heating—anticipate principles that engineers still use today.
Cracking Open Ancient Black Gold
Bitumen, a natural petroleum-based substance, was indispensable in ancient Mesopotamia. It sealed boats, waterproofed baskets, glued tools, and was molded into transportable blocks for trade. But raw bitumen had problems: it could soften in heat, crack when brittle, or become too sticky to handle.
Rather than using it as-is, Sumerian craftspeople engineered it.
Researchers analyzed 59 bitumen-based samples recovered from Abu Tbeirah, a major third-millennium BCE settlement located near the famous city of Ur. Using high-resolution digital microscopy and machine-learning-assisted image processing, they examined the internal structure of the materials—without damaging the artifacts.
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