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ETH Zurich researchers use bacterial biocement for 3D printing and robotic spraying of building components

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During her doctoral thesis, ETH Zurich doctoral graduate Karen Antorveza Paez conducted three studies combining microbially induced calcite precipitation (MICP) with digital fabrication, proposing two methods for manufacturing building components: 3D bioprinting and robotic spraying. The entire process takes two to five days, depending on the strength required for the component. According to her, this biological bonding is closer to mortar than to concrete; the mechanical properties of the spraying method still require extensive research.