Autoclaved Aerated Concrete

Also known as Aircrete: concrete mixed with foam to create a lighter and more insulative concrete.

It would be easier to 3D print buildings with this than regular concrete. Also, it's mostly air so it's rather efficient on resources.

Little Dragon

• Little Dragon Aircrete System: https://www.youtube.com/watch?v=kawsFsFi6Pg
  • Assembling foam injector: https://www.youtube.com/watch?v=-_c7B1oGt_Q
  • Assembling the generator: https://www.youtube.com/watch?v=mS7tlimq51c

Major Components

• Kits: http://www.domegaia.com/store/c1/Featured_Products.html
• Hyet Paint Mixer: https://www.amazon.com/dp/B01ESRQEYG/ref=sspa_dk_detail_3?psc=1
• Aquatec DDP 5800 115V 120 PSI 1.3 GPM Pump: https://www.amazon.com/Aquatec-DDP-5800-115V-Pump/dp/B06XK2RZ1H
• air compressor that can do 90psi
• bucket, hoses, "shark" connectors, enclosure, pneumatic regulator, PVC

Also

• Aerated_Concrete
• https://en.wikipedia.org/wiki/Autoclaved_aerated_concrete