1,900-Year-Old Roman Latrine Sheds Light on Concrete's Millennia-Long Durability

Researchers studying a 1,900-year-old Roman latrine have gained new clues about why ancient Roman concrete has lasted for millennia. Unlike modern concrete, the Roman formula appears to self-strengthen over time, partly through reactions with seawater and minerals. The latrine provides a well-preserved case study for understanding the material's exceptional durability.