3D printers and brick-laying robots are nothing new. We have covered a few of them here in the past. Here is large-scale 3D printer capable of printing castles and other structures. It is available in various models, a few of which can work in extreme conditions and erect larger structures.
According to the company, the 3D Cement Printer has an average speed of “100 sq. m. and 3m height in 48 hours.” You will have to assemble these kits before putting them to use. More info is available here.