Concrete In Ancient Rome

The Romans were able to build massive, enduring structures that still create inspiring sights to this day. Two major innovations were major factors in allowing romans to build these structures. Concrete, an invention of Rome, allowed them to build long lasting bridges, temples and dwellings. (Kamm, n.d.). Arches were used to extend the length of structures, providing support. With these two methods at their disposal, Rome was able to produce some awe inspiring structures.
There were two types of concrete that were used in ancient Rome. The first of which was created simply using one part lime and three parts river sand. It was not as structurally permanent. The other type was made from mixing two parts pozzolana and one part lime. (the-colosseum.net,