Researchers at ETH Zurich, a university in Switzerland, have developed a new robotic additive manufacturing method to help make the construction industry more sustainable. Unlike concrete 3D printing, the process does not require cement.
According to a press statement from ETH Zurich, the robotic printing process, called impact printing, uses cheap, abundant, and low-carbon earth-based materials such as clay or excavated earth. Currently, the robotic additive manufacturing method uses a mix of excavated materials, silt, and clay. Most of the custom material is common waste product sourced locally from Eberhard Unternehmungen, a Swiss construction company. In the future, the process could use other materials.
With ETH Zurich’s method, a robot deposits material from above, gradually building a wall. On impact, the pieces of material bond together, with minimal additives. Whereas concrete 3D printing creates layers, ETH Zurich’s method extrudes and drops the material one bit at a time at velocities of up to 10 meters per second. The fast speed allows the material to bond quickly.
ETH Zurich’s process can build full-scale, freeform structures, including one- or two-story walls and columns. The printing tool has been used to build structures as tall as almost 10 feet. The process results in walls with a bumpy texture, but robotic surface finishing methods can achieve a smoother finish.
The custom printing tool can be integrated with multiple robotic platforms. As a result, the tool can build walls in both offsite facilities and onsite construction projects. At ETH Zurich’s Robotic Fabrication Laboratory, the tool has been integrated with a high-payload gantry system. The hardware can be mounted on an autonomous legged excavator to build walls on sites with variable terrain.
ETH Zurich says it aims to increase the cost competitiveness of sustainable building materials through efficient and automated production.
Related Stories
3D Printing | Aug 29, 2018
Dubai plans to 3D print 25% of every new building by 2025
The Dubai Future Foundation recently announced the Dubai 3D Printing Strategy.
Accelerate Live! | Jun 24, 2018
Watch all 19 Accelerate Live! talks on demand
BD+C’s second annual Accelerate Live! AEC innovation conference (May 10, 2018, Chicago) featured talks on AI for construction scheduling, regenerative design, the micro-buildings movement, post-occupancy evaluation, predictive visual data analytics, digital fabrication, and more. Take in all 19 talks on demand.
| Jun 11, 2018
Accelerate Live! talk: How advanced digital fabrication techniques are driving design innovation
In this 15-minute talk at BD+C’s Accelerate Live! conference (May 10, 2018, Chicago), SOM’s Lucas Tryggestad and Kyle Vansice present the firm’s 3D-printed building project and explore how digital fabrication is pushing design innovation.
| May 30, 2018
Accelerate Live! talk: Seven technologies that restore glory to the master builder
In this 15-minute talk at BD+C’s Accelerate Live! conference (May 10, 2018, Chicago), AEC technophile Rohit Arora outlines emerging innovations that are poised to transform how we design and build structures in the near future.
3D Printing | Nov 21, 2017
Europe’s first 3D-printed building has been completed
Construction ran a few weeks behind schedule, but the 3D printing wasn’t to blame.
Codes and Standards | Aug 8, 2017
3D printing industry working to implement standards for products, processes
Additive Manufacturing Standardization Collective (AMSC) will develop industry-wide additive manufacturing standards and specifications.
Accelerate Live! | Jul 6, 2017
Watch all 20 Accelerate Live! talks on demand
BD+C’s inaugural AEC innovation conference, Accelerate Live! (May 11, Chicago), featured talks on machine learning, AI, gaming in construction, maker culture, and health-generating buildings.
Building Team Awards | Jun 14, 2017
3D-printed office: Office of the Future
Dubai kicks off 3D-printing tech initiative with a novel office project.
3D Printing | Jun 14, 2017
This is the world’s first building completely 3D printed onsite
The building is a lab for research on drones and 3D printing technology.
| Jun 13, 2017
Accelerate Live! talk: Incubating innovation through R&D and product development, Jonatan Schumacher, Thornton Tomasetti
Thornton Tomasetti’s Jonatan Schumacher presents the firm’s business model for developing, incubating, and delivering cutting-edge tools and solutions for the firm, and the greater AEC market.
