The time period during which concrete was first invented depends on how one
interprets the term “concrete.” Ancient materials were crude
The story of concrete from the natural deposit of
Jun 25, 2015
Learn about the
Mar 13, 2002
The Greeks went on to make further improvements, and finally the Romans
developed a highly durable
This is an interactive timeline covering the
What do you think is holding the pyramids together?
The use of concrete dates back to the Roman Empire. The Castle de San Angelo was built in Rome in 138 A.D. The stone facing was stripped away hundreds of ...