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https://csengineermag.com/learning-from-roman-concrete/
To study the substructure of the concrete in the tomb, Dr. Jackson traveled to Rome in 2006 to collect samples. Dr. Jackson also collected samples from and studied other Roman concrete structures such as Trajan’s Markets. There are several key differences between Portland and Roman concrete that impact the trajectory of their structures.
https://www.romae-vitam.com/roman-concrete.html
Roman concrete Roman concrete called opus caementicium in Latin was used from the late Roman Republic until the end of the Roman Empire. It was used to build monuments, large buildings and infrastructure such as roads and bridges. The quality of the concrete was excellent and the buildings and monuments still standing today are a testament to the strength of their construction!
https://www.history.com/news/the-secrets-of-ancient-roman-concrete
By analyzing concrete used to build 2,000-year-old Roman structures, a team of scientists may have found a longer-lasting, greener alternative to modern cement.
https://www.bbc.com/news/science-environment-40494248
"I think Roman concrete or a type of it would be a very good choice [for Swansea]. That project is going to require 120 years of service life to amortise [pay back] the investment.
https://bgr.com/science/roman-concrete-strongest-in-the-world/
The Roman Empire may be long gone, but its architecture has stood the test of time — most notably, its insanely durable concrete, which has been hailed as the world’s strongest.
https://science.howstuffworks.com/why-ancient-roman-concrete-stronger-than-modern.htm
Researchers at the University of Utah have discovered that as seawater filters through piers and breakwaters made of age-old Roman concrete, the structures actually become increasingly stronger because of the growth of interlocking minerals — including some minerals that are rare or expensive to cultivate in lab settings. Advertisement.
https://www.ancient-origins.net/news-history-archaeology/researchers-discover-secret-recipe-roman-concrete-020141
A magnified piece of Roman concrete consisting of lime, volcanic sand, and rock ( Wikimedia Commons ) It isn’t just that Roman concrete is more lasting. It is also not as bad for the environment in the manufacturing of it because the mix only needed to be heated to 900 Celsius as opposed to the 1,450 of modern concrete.
https://newscenter.lbl.gov/2013/06/04/roman-concrete/
Roman concrete produces a significantly different compound, with added aluminum and less silicon. The resulting calcium-aluminum-silicate-hydrate (C-A-S-H) is an exceptionally stable binder. At ALS beamlines 5.3.2.1 and 5.3.2.2, x-ray spectroscopy showed that the specific way the aluminum substitutes for silicon in the C-A-S-H may be the key to ...
https://www.slsc.org/roman-technology/
5. Concrete passing the test of time. Roman concrete has passed the test of time. By using lime and volcanic rock, the Romans were able to create a magnificent mortar that can still be seen thousands of years later. Roman concrete was revolutionary in ancient architecture for a few reasons.
https://www.washingtonpost.com/local/ancient-roman-concrete-has-lasted-for-centuries-ours-not-so-much/2018/05/14/97927e00-5770-11e8-858f-12becb4d6067_story.html
Perucchio said that if an architect today were to file paperwork intending to build the Pantheon — the Roman temple that has a 142-foot-high unreinforced concrete dome, …
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