Portland cement

Aspdin's 1824 patented cement, modern standard

2 episodes mention this

Episodes

#4508: How Concrete Conquered Stone

Roman concrete self-healed for 2,000 years. So why did stone lose out?

Jul 29
#3985: How Your Floor Stays Up: The Hidden Skeleton Inside Every Building

The invisible chain that carries every pound from your apartment to the bedrock.

Jun 29