The German University of Technology in Oman, GUtechman, has marked the completion of the world’s largest 3D real concrete printed building in the sultanate. The 2,100-sq-ft house features three bedrooms, three bathrooms, a living room, kitchen and reception area.
While the Middle East has seen numerous 3D printed buildings, the 190-sq-m building in Oman is the first to be printed with a real concrete instead of the traditional dry mix mortars used in most other 3D printed buildings, reported Times of Oman.
The house had been 3D printed in two stages. During the first stage, the materials recipe was adjusted and the Omani team, while the second part was done by the Omani crew on their own and it took five days to complete.
To make the concrete 3D printable, GUtech had applied the D.fab solution developed by Danish 3D printer maker Cobod and Mexican cement giant Cemex, where the concrete can is made from locally available cement, sand and gravel. Cobod teamed up with the Mexican group to devise a method of using conventional readymix concrete during 3D-printing. The method reduces time and money compared with current 3D printing methods and traditional construction, the companies stated.