Ann: CETO Update, page-2

"Strong walls are built up layer by layer using concrete with automatic reinforcement, while plumbing and electrics are also added by the system during the building process.
The nature of the technology means it will also be possible to create curved walls and architecture that is both "exotic and 'beautiful", according to Prof Khoshnevis."

https://hotcopper.com.au/posts/12795143/single

It has taken four years but finally they have taken my advice that it is possible to build a concrete buoyant actuator..