Researchers Uncover the Secret Ingredient to Roman Mortar’s Strength

why has Roman cement lasted so long
Hadrian’s Wall in Rome

The Washington Post published an article explaining the secret to ancient Rome’s long-lasting mortar recipe. Turns out the secret to enduring 2,000 years of earthquakes and floods is volcanic sand, which allowed for formation of clusters of a mineral known as strätlingite. These mineral crystals, Tformed because of a reaction that took place over time between the lime and volcanic matter in the mortarhelped the concrete withstand cracking.

Got more questions about your project?

  • Drop files here or
    Accepted file types: jpeg, jpg, gif, png, pdf, Max. file size: 50 MB.
      Allowed formats: jpeg, jpg, gif, png, pdf
    • How would you like us to respond?

    • Note: Some questions will be published anonymously with their answers at the end of this story to share with other readers.