Cement / Concrete / Asphalt

How well do you know your building materials? Cement, concrete, and asphalt are often used interchangeably, but they’re quite different.

Cement is a powder made from burnt limestone and clay. Mixed with water, you can use it to glue things together.

Concrete is a mixture of cement, water and aggregates—usually rocks or sand. It’s often reinforced with steel and is super strong. Half the world around you is made out of concrete.

Asphalt, the “blacktop” material used to pave roads, is a type of concrete. Instead of cement, the “glue” is bitumen, a tar-like petroleum.

Further reading:

Thumbnail credit: Perri Concrete