Advanced Cement Composites

(Wilfried Ellmer) #41

The seabed is basicly “made of basalt” and the mid ocean ridge offeres unlimited energy resources…this is not something available in phase 1 but certainly in phase 3 and beyond when the real big amounts of resources will be needed…as long as you are in the “few hundreds of tons” range you can well work with material from homecenter… it does not matter much as a cost factor. When the seastead reaches “city size” and you cross the “millions of tons range” - material supply becomes a very different issue ( look asian sandwars )…

Vent base Alpha could be a BCF (Basalt Continous Fiber ) production site…with access to ready to use basaltic magma for free…an uninhabitated volcanic island a source of roman style volcanic cement (google keywords: AL-tobermorite, roman concrete seawater, cesarea harbor concrete, pantheon concrete dome )…

The seastead does not need to move around to exploit these resources - it has “mobility by proxi” by the means of ships - like its historic model - Venice

Why Venice is not seasteading
(Wilfried Ellmer) #42

…The Global concrete fiber market is expected to grow during the forecast period (2017-2023) due to rapid urbanization and growing construction activities across the globe. Additionally, the concrete fiber market is also driven by the increasing demand for synthetic fibers in end-use industries such as transport infrastructure, building and construction, and mining and tunnel…

context google | construction activities 21st century dominated by concrete sea structures |

(noboxes) #43

See Why Venice is not seasteading

(Wilfried Ellmer) #44

Advanced Cement Composites

context : automated printing | termite-tech | projected concrete | gunnite | free-forming methods | real estate paradigm change |

• automated printing of building sized structures is on the brink to become something feasible …

• Having a sophisticated mass production line for floating housing units is on the table.

• The produced housing units can be distributed globally and effortless with little cost - on the watersurface of the planet - this opens possibilities of international global sales - normaly not available for real estate projects which are restrained to local building lots.

• This promises major leaps forward in cost per squaremeter and production efficiency.

• It is also a construction method where round shapes are not more expensive to perform than boxy shapes. This favors dome, shell, and bubble cluster construction for a Draupner impact safe floating city.

• light materials can be printed directly on the watersurface (on a sheet of plastic) - the existance of a “building lot” as most critical (and expensive) ingredient of a real estate development becomes obsolete and innecessary.

• All this sums up to a “Mayor Paradigm Change” in real estate development.

• With a population of 7,5 Billion (with a B) the whole topic of “creating housing units” needs this rapid paradigm change - suburban housing development is reaching its limits everywhere.

(noboxes) #45

It’s been feasable for several years already!

I think what is holding it back from acceptance is 4-fold:

  1. there’s no rebar in it
  2. it’s slower than pouring into forms
  3. the cement is unprotected from environment as it hardens
  4. it’s not concrete (cement plus gravel)

But it’s been documented on this forum that 3-D cement (but not concrete) printing of housing has been done in many countries.

(system) #46

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