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Researchers have unlocked the chemistry of Roman concrete which has resisted the elements for thousands of years.
Ancient sea walls built by the Romans used a concrete made from lime and volcanic ash to bind with rocks.
Now scientists have discovered that elements within the volcanic material reacted with sea water to strengthen the construction.
[...] This new study says the scientists found significant amounts of tobermorite growing through the fabric of the concrete, with a related, porous mineral called phillipsite.
The researchers say that the long-term exposure to sea water helped these crystals to keep on growing over time, reinforcing the concrete and preventing cracks from developing.
Source: BBC News
American Mineralogist DOI: 10.2138/am-2017-5993CCBY
(Score: 2) by takyon on Wednesday July 05 2017, @06:53PM (1 child)
Do I have to eat fish on the sustainable seastead?
[SIG] 10/28/2017: Soylent Upgrade v14 [soylentnews.org]
(Score: 1, Interesting) by Anonymous Coward on Wednesday July 05 2017, @07:33PM
Between aeroponics, hydroponics, greenhouse growing (needed for salt intolerant plants to avoid salt spray/sea mist, unless you either have a shore buffer, or are 100+ feet above sealevel), and salt tolerant crop species, you can grow pretty much anything you want without relying on seafood. However, if you want meat products that are not from the sea, you would need to grow enough grain crop to support them, plus any necessary supplemental minerals needed for their long term health. For instance, calcium for chickens and the production of sturdy egg shells. From there it is just a matter of how much of the year you can grow plants and the preservation techniques employed to ensure sufficient year round supplies.
There is also always the possibility of trading fish for food you actually want :)
Also as a fix to the grandparent: I2P's default addressbook doesn't link to vivalarevolucion.i2p, inr.i2p (the default addressbook for i2pd) however DOES.