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3Dprinted formwork for concrete

3D printed formwork for casting concrete constructions
  [vote for,

New way of constructing formworks for concrete structures.

This idea consists of a huge 3D printer. It has all the elements of an ordinary 3D printer. Just like one of these machines:

see the '3D printers' link below

But over 50 times as large. So the plastic sausage that comes out is 50 times as large as well.

This machine is capable of printing structures that can replace the conventional formwork needed for casting concrete.

This printer can print very complex formworks which are filled with special fiber reinforced concrete or 3Dprinted metal reinforcements.

In this way an unprecedented design freedom for concrete buildings can be achieved at lower costs. Not only complex but also relatively simple structures like bridges and tunnels can be constructed this way.

If the concrete is cured, the plastic mold can be removed. The remains of the plastic are then shredded. These granules can be upcycled as new raw material for the 3D printer to create a new formwork for a new project building project somewhere else.

liquid98, Jan 11 2013

3D printers http://www.craftsma...d-instructions.html
[liquid98, Jan 11 2013]


       I think we did this before, but printing the concrete directly rather than printing formwork.
MaxwellBuchanan, Jan 11 2013

       Not nearly a new idea.
DrCurry, Jan 11 2013

       Did not know that, DrCurry. Can you point me some pictures ?
liquid98, Jan 11 2013

       [+] New one on me.   

       Forms are usually wood or reinforced polystyrene. For a 3D printer the latter could be brought to the site in compressed (non-aerated) form.   

       A bit of reshaping afterwards and the foam could be instantly reused as insulation.
FlyingToaster, Jan 12 2013

       I think this would be great for making otherwise flat surfaces ornate.
Kansan101, Jan 12 2013

       I don't think your printer would need to be as large as you described. The actual framework is normally built with 2x4's or 2x6's so a 3 inch by 7 inch machine should be big enough. Like a meat grinder, with plastic inside; as the fame work is extruded, manipulators can make surface changes and folds as necessary.
Brian the Painter, Jan 12 2013

       "Print" formwork from fast-setting pure cement mix. Then fill the void with concrete. Et viola.
8th of 7, Jan 13 2013

       Pure cement lacks strength... it's too friable. You need to add fibres or sand or aggregate to the mix or it will simply crumble.
UnaBubba, Jan 14 2013

Brian the Painter, Jan 14 2013


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