Q:

What are bricks made of?

A:

Bricks are made with the two most abundant materials on Earth: clay and shale. These two materials are then put in a furnace, called a kiln, and heated to 2,000°F (approximately 1,100°C). By a chemical process (vitrification), the materials fuse together and form bricks.

Concrete bricks, gray bricks similar to clay bricks, are not really bricks, even though people call them such on a regular basis. Concrete bricks are significantly easier to break that clay bricks.

Due to the longevity of clay bricks, some of the American colonial buildings still stand today. A few examples are Virginia's St. Luke's Church (est. 1632), the Boston State House (circa 1713), and Philadelphia's Independence Hall.

Sources:

  1. gobrick.com

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