https://omeka.lawrencecatania.com/files/original/75ecd7530ddedb7360c981abccef6f73.jpg f78a660e10a7ebcbf2efdddc5b38c83e Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Knowledge Stream Contributor An entity responsible for making contributions to the resource Lawrence Catania Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource We Finally Know Why Ancient Roman Concrete Was So Durable Description An account of the resource This has been observed in concrete from another 2,000-year-old site, the Tomb of Caecilia Metella, where cracks in the concrete have been filled with calcite. It could also explain why Roman concrete from seawalls built 2,000 years ago has survived intact for millennia despite the ocean's constant battering. Source A related resource from which the described resource is derived <a href="https://www.sciencealert.com/we-finally-know-why-ancient-roman-concrete-was-so-durable" target="_blank" title="We Finally Know Why Ancient Roman Concrete Was So Durable" rel="noreferrer noopener">https://www.sciencealert.com/we-finally-know-why-ancient-roman-concrete-was-so-durable</a>