Additive Manufacturing of Ceramic-Type Geopolymer (3D-Printing)

[@WilloPax]

Excellent eye-opening presentation. After GPI's previous presentation on 3D printing a house and how difficult it is, I now understand why extrusion is so difficult and why so many competitors have failed. It takes a team, each bringing their expertise.

[@Cloxxki]

Excellent presentation and research. As an outsider I'm curious to know the physical properties of a structure from geopolymer, if ideally printed. What does the end result compare to? Is it perhaps hard like concrete, but strong like armed concrete? Give me some perspective please :)

[@Cloxxki]

Has any work been done with dual component prints? I can imagine an inner and outer filament, married at their nozzle tips, at their boundary layer hardening quicker and growing branches of faster hardening material especially in the outer filament layer.

[@SpaceCrete]

yes

[@SpaceCrete]

Very helpful and informative presentation, thank you!

[@Cloxxki]

Has any work been done to chase freshly extrade layers with a netting of sorts, say woven from dry hemp fibre, carrot fibre, etc? If the net has its on inelastic properties, and adheres well to the wet freshly despoited filament, it might immediately add shape holding to the print. Even more so if the netting were to be filament-absorbing while speeding up hardening in the process, This would form an effective "crust" around the fresh filament layer.

[@Advanced_Materials_Publishing]

I know of the other geopolymers from the annual Geopolymer Conference in which they added short fibers of 6 mm (not stacked ones). The properties of geopolymer in general is or are like a concrete or pure hardened cement of high quality. As all substances of this kind (covalent bonds) it is brittle, meaning it can withstand compressive forces but fails with flexural forces. A normal geopolymer so to speak with sand as filler material has about 50 MPa, the hardest one I know have extrem 170 MPa CS (compressive strength) and 30 MPa flexural strength (FS). Ice has a CS of 2 MPa, pure glass more then 500 MPa. In general all the reinforcements which are used in normal concrete are used in geopolymers as well. The ones in the video are not made for construction but more sophisticated applications. Mostly construction materials are made from geopolymers. Have a good one! Patrick

[@ssvalvi]

Great..Well done!

[@arijgasmi36]

❤️❤️💕