Mycelium‑Enhanced Clay Bricks Developed at TU Graz for Sustainable Construction

Researchers at the Technical University of Graz (TU Graz) are creating a new building material by mixing traditional clay with mycelium, the root network of fungi. The material is printed with 3D printers, inoculated with a sugar‑water solution containing mycelium, and allowed to grow, resulting in stronger, bio‑welded components that can be joined without adhesives. The approach aims to provide a low‑carbon alternative to conventional bricks.

The development fits into a broader push for biobased construction materials, including hemp, straw and rammed earth. Austria’s “Erden Haus” in Schlins is highlighted as the first residence built from prefabricated earth‑based blocks. Experts note that broader adoption is hampered by lengthy planning processes, higher design costs, lobbying for traditional materials, and regulatory standards that lag behind emerging technologies.