The old Roman structures have always been a major attraction for both ordinary and researchers. The durability of these wonderful architectural monuments such as Pantheon Rome has made researchers curious about how to spend a long time after every thousand years of the rise of the Roman Empire. While the length of these structures can be largely attributed to the Roman concrete, the question still prevails about the specialty and the materials used in the concrete itself.
Roman concrete components
According to Ticket It was published in the magazine of Science Advances, and an international team of researchers led by the Massachusetts Institute of Technology (MIT) found that the materials are not a little different from what we have thought, but the techniques used to mix them were also different.
One major interest was Pozzolan, or ash. The Romans used the ashes from the volcanic family of the Italian city of Pozzuoli and shipping it all over the empire. Silica and alumina interact in ash with lime and water in the interaction of Bazlani at the surrounding temperatures, which leads to stronger and longer concrete.
Another major component is lime groups, or small pieces of Quicklim.
These blocs give Roman concrete their ability to recover. The concrete weakens and weakens over time, but the water can sneak into its cracks and reach the blocks. When they interact with water, the blocks create crystals called calcits that fill the cracks.
The difference with the modern cement
High temperature oven is used today to make modern Portland cement, and all materials are grinded in a soft powder. It removes lime groups that lead to the lack of self -recovery properties of Roman cement.
The Romans use a method known as hot mixing, which includes combining QuickLime, Pozzolan, water and other ingredients and then heating them. The Massachusetts Institute Technology team found that this method helps open the Lime Clasts self -recovery capabilities, and can lead to a faster preparation than cement made with a fast water solution called Slated Lime.
