An architectural experiment that combines additive manufacturing technologies with local building materials is currently being created for Expo 2025 in Osaka. In one of the rest areas on the exhibition grounds, components were made from locally sourced earth material using a large-format 3D printer. The aim of the project is to test a form of architecture that is based on natural processes and is also completely biodegradable.
The design is based on an approach that combines technological possibilities with traditional building methods. A mixture of earth, clay, straw, pigments, seaweed gum and magnesium oxide was used as printing material. The latter acts as a binder that reacts with the other components in a moist environment and hardens within a few days. The formulation is based on traditional Japanese clay building techniques and was specifically designed for printability, strength and environmental compatibility.
The organic shapes of the components were generated from 3D scans of natural stone formations collected in various regions of Japan. Computer-aided shape optimization was used to minimize overhanging geometries and ensure the static integrity of the material. In addition to wall panels, planters, seating, washbasins and stackable blocks were also printed on site. The exterior panels were pre-produced in a workshop in Toyama and then transported to Osaka for assembly. All building elements were designed in such a way that they can be returned to the natural cycle without residue after the end of the World Expo.
The project sees itself as a contribution to a future construction method in which additive manufacturing with natural materials is not only technically possible, but also socially and ecologically sensible. The combination of digital form generation, robotic production and local resources is an example of how architectural construction can be rethought beyond industrial standardization.
Find out more about WASP at 3dwasp.com.
For more information about AHA, please visit aki-hamada.com.
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