One of the most intriguing mysteries of the past is the secret of the amazing durability of buildings I, built by the ancient Romans. For more than 2000 years, concrete was used, which even now has not lost its strength.
The inventors drew attention to the unusual composition. This is a mixture of volcanic ash that can be found in abundance around the city of Pozzuoli. By mixing pozzolan with lime and water, the Romans test the concrete that has been able to withstand the years.
Scientists drew attention to the fact that there are inclusions in samples of ancient Roman concrete. One gets the impression that the concrete was simply not mixed properly, which led them to think and ultimately became the key to unraveling the secret of ancient concrete. high estimate that the Romans used slaked lime for the preparation of concrete. However, studying the details of the search makes it possible to understand that their technology requires the use of exclusively quick news.
Upon contact with quick news and the beginning of observation, accompanied by high temperature. This serves several purposes. First of all, the setting and curing time was reduced, which significantly reduced the construction time. Pieces of “nepromethean” lime in concrete play an important role. If the concrete starts to crack, water will crack. Reaching the lime, it forms a solution of calcium carbonate, which reliably “glues” the crack. Thus, the structures of Ancient Rome are included in the structure.
Scientists got infected experimentally. They objected, several samples were putzolan concrete of different recipes and classic concrete. Only concrete with quicklime is restored after cracking.
Source: Tech Cult
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