3D concrete printing is based on converting a digital model into instructions for a robot, which then builds the structure layer by layer. INSTATIQ has been working with 3D concrete printing technology for some time and has already tested it in building projects. For Thomas Beton, the collaboration represents an opportunity to contribute its expertise in concrete technology and in the long term, help reduce material consumption, increase automation and provide greater freedom in the design of concrete structures.
– 3D printing is a very exciting area for concrete. When INSTATIQ approached us with the specific requirements of its printing technology, we were able to contribute our expertise in concrete and develop a mix tailored to the process in a very short time. The combination of digital technology, automation and material development gives us new opportunities to rethink how we design and build concrete structures, says Philipp Schadendorf, CEO of Thomas Beton.
Developing the right concrete
A crucial part of the technology is the concrete itself. To be suitable for 3D printing, the concrete must be pumpable and have the right consistency as it leaves the print head, while each layer must quickly become stable enough to support the subsequent layers.
Based on INSTATIQ’s technical requirements, Thomas Beton developed a concrete mix specifically adapted to the printing process.
The concrete currently being tested has been developed in Thomas Beton’s laboratory. The mix remains workable for up to 3.5 hours while maintaining consistent quality and the properties required for the printing process.
– INSTATIQ has developed an impressive technology for turning digital building models into real structures. Our role is to make sure that the concrete works reliably within that process, says Philipp Schadendorf.
A complement to traditional construction methods
For Thomas Concrete Group, the collaboration is primarily about exploring how the properties of concrete can be developed for new production methods and how 3D printing could complement today’s construction methods in the future.
The successful bicycle shelter demonstration is one example of the potential of the technology. Further projects in which 3D concrete printing could be applied are already being discussed. The greatest potential is seen in projects where customized geometries, reduced material use or a high degree of automation can offer advantages over conventional construction methods.
– The technology is still at an early stage of commercial development and should be seen as a complement to traditional construction methods rather than a replacement. However, the potential is significant, not least when it comes to using concrete more efficiently while also creating greater freedom for architects, structural engineers and contractors, says Philipp Schadendorf.
