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Here's why Roman structures have been standing strong for over 2000 years!
These days we use cement in construction and a building constructed using it does not last even for a few decades. But have you ever wondered how Roman structures are still standing strong despite two thousand years passing by? Scientists have found out the reason for you.

Two thousand years ago, Roman builders constructed vast sea walls and harbour piers that have even outlasted the Roman empire. And the secrets used by them might help the engineers of today.

As per scientists the harbour concrete, is not only strong but is getting even stronger day by day despite suffering earthquakes and floods.

As per a report published in American Mineralogist, the structure laid down by engineer Marcus Vitruvius in 30 BCE has been constructed using a blend of volcanic ash, lime, and sea water. This mixture was further mixed with volcanic rocks. Later, the whole mixture was spread into wooden moulds that were later immersed in sea water. What is more surprising is that as per historical documents, since the beginning, the structures have been constantly exposed to sea water.

The research was conducted by researchers from Berkeley Lab and the University of Utah. The researchers put samples of the structure under X-Ray tests to arrive at the conclusions.

The team of researchers found out that as seawater seeps into the concrete, it dissolves the lime inside it. But rather than corroding the structure, it strengthens the same. This is because the sea water that dissolves lets the crystals of Al-tobermorite and phillipsite grow. This further plugs the holes thus leading to restrengthening of the structures.

The researchers have also uploaded a video of their results in order to explain how the technique works. What remains to be seen is how modern day engineers are able to use this centuries old technology in present day structures.

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