This is very cool. A British company is making these inflatable concrete structures. Basically you roll out the "building", inflate it, get it wet, wait for the concrete embedded in the fabric to set and its good for 10 years. They claim its impervious to fire, weather, small arms fire and shrapnel. In addition they can be lined on the inside or outside for better thermal performance. I know this sounds like an ad, but I'm not associated with them at all. I just thought I'd share something that interested me.
Just think of how this could change developing areas if it is more widely adopted?
Source -> http://concretecanvas-pedigo.us/