Quote:
Aircrete sounds weak and water permeable but who knows maybe it’s weight to strength remains fair?
Further cement with bubbles won’t insulate well, the cement conducts so well heat will just bridge around the bubbles,
|
Concrete is weak and water permeable. Depending on the mix, the ancient Romans had it down. Modern concrete relies on steel reinforcing, which rusts with water penetration leading to spalling.
You can find Youtube videos of someone holding a block of aircrete and holding a blowtorch on the other side. It's like the Space Shuttle's tiles.
Let's imagine for a moment. An telescopic robot arm at the center of a circular building line, with a 3D print head at the wrist. Two print nozzles; one is aircrete — as stiff a mix as can be pumped through the nozzle, the other a mortar mix with fiberglass strands or sand, with or without epoxy hardeners mixed at the nozzle.
Depending on the degrees of freedom available to the arm, the form would be approximately hemispherical.
https://en.wikipedia.org/wiki/Armour-Stiner_House
I don't get why people don't go for this stuff.
