Remember the North African Desert Greening Project.
So, we have currently a melting north pole ice cap.
Why don’t we also build evaporators in that area, feed them with (safe nuclear) energy and salt water, and then lower the temperature by local area condensation effects ? 😀
I think that will be a run.
Concrete: Stable by seawater
The fact that some fortifications have withstood the waves to this day is due to a special building material, the Opus caementitium . With the “Roman concrete” the ancient Romans built many of their monumental buildings, eg. As aqueducts, arenas and huge domed buildings such as the Pantheon . These, too, weathered weather conditions and even earthquakes surprisingly well. For comparison: Modern concrete survives about 100 years without damage.
The secret is probably in the ingredients. The ancient building material consists mainly of lime, volcanic ash and volcanic rock, mixed with seawater. For curing, the cement takes over 150 days. What makes the mixture so durable has been studied by Marie Jackson from the University of Utah for many years on antique concrete samples.
Video of the researchers to the “Roman concrete”
In doing so, she already noted that hardening inside the material creates special crystalline structures that evidently provide greater stability where current concrete structures often crack. In addition, Jackson’s team has already discovered an extremely rare mineral in marine mortar.
Strengthened structures strengthened
For the new study, the samples were examined again using high-resolution methods. The researchers found another mineral that has only formed over time. Their conclusion: When seawater flows around the docks and penetrates into the concrete, components of the volcanic ash dissolve.
“Phillipsite and Al-tobermorite mineral cements produced through low-temperature …” , American Mineralogist, 7/3/2017
The result is the new rock-like structures that strengthen the material. As a result, the plants today are even stronger than shortly after their construction. In modern building materials, salt water has exactly the opposite effect, according to Jackson in a press release.
The researchers are now working to recreate the ancient concrete. Volcanic ash and rock are rare. That’s why you have to search for alternatives. Since it takes time for the building material to develop the desired strength, the building material would, however, only be suitable for certain projects, for example to secure coasts in the long term.
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