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Concrete
Patented: History of Inventions
The History of Concrete
Concrete with steel through it is known as reinforced concrete. It's a kind of miracle material that achieves these two fabulous properties of strength relatively cheaply and on any scale you like. The idea of turning limestone into a powder in order to make a cement how far can we go back to the sort of pre history of concrete or a kind of proto-concrete? You can trace that a very long way back indeed humans have been using lime which is limestone heated to made a cement.
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