Those concrete frames can be prefabricated and used just as steel is, either by clipsing (the concrete can be as thin as 2 mm) or by using the "nut and bolts" system (those being also in concrete)...
I'll get a more precise answer on saturday :-) "What can I do, What can I write, Against the fall of Night". A.E. Housman
2mm frames? As thin as that!? How surprising! I look forward to your "more precise answer."
And now, I too, must get to work.
This projection technique is used for example on existing posts when you want to add some levels to an existing building and that the foundations are good enough. You spray this concrete as an outward layer of the existing post, boosting it to the desired section, while people are still working in the office, the works being behind plastic sheets...
In conclusion, there are numerous ways to achieve the re-furbishing of stressed buildings. The "meccano" one being the less obnoxious in use and time and quantities... So surely the cheapest!
Two millimeters is quite easily obtained in a prefabrication controlled process (pressure molds). Some, today, are thinking of designing window frames with this concrete. They would be as thin as the steel one's but with no corrosion and with a thermal resistivity nearer to wood. And we could leave aluminum to planes and boats...! "What can I do, What can I write, Against the fall of Night". A.E. Housman
