Scholarlink

<p>Biocementation via microbially induced calcium carbonate precipitation (MICP) provides a biologically mediated approach for producing inorganic materials, with reduced embodied energy, using bacterial metabolism to trigger mineral formation under ambient conditions. Yet the scale-up of current MICP-based building materials is constrained by fabrication techniques that restrict control over the geometry and material performance of large structures, limiting their application as building materials. Here, we present a 3D biocement printing (3DBioP) process and bio-ink for extrusion-based additive manufacturing of inorganic materials at the decimeter scale. By embedding <i>Sporosarcina pasteurii</i> cells in bio-inks and printing porous structures, we enable controlled biocementation that enhances interlayer cohesion and overall mechanical performance at scales of tens of centimeters. We demonstrate that mineralization efficiency is consistent with transport-limited, reaction–diffusion-controlled precipitation modulated by surface area exposure and geometric porosity, allowing the tuning of macroscale properties through microscale design. Our results indicate that MICP enhances the printed structures and mitigates extrusion-printing issues that limit scaling, including weak interlayer adhesion and shrinkage. This work bridges the gap between biological and digital fabrication, establishing a pathway towards geometrically scalable, programmable, and low-embodied energy mineral materials.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

3D biocement printing: scaling up living mineral structures

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年5月7日

查看全文
  • Karen Antorveza Paez,
  • Robert O. Kindler,
  • Dimitrios Terzis,
  • Alessandro Dutto,
  • Tazio Pleij,
  • Gustavo Zorzetto,
  • André R. Studart,
  • Benjamin Dillenburger

摘要

Biocementation via microbially induced calcium carbonate precipitation (MICP) provides a biologically mediated approach for producing inorganic materials, with reduced embodied energy, using bacterial metabolism to trigger mineral formation under ambient conditions. Yet the scale-up of current MICP-based building materials is constrained by fabrication techniques that restrict control over the geometry and material performance of large structures, limiting their application as building materials. Here, we present a 3D biocement printing (3DBioP) process and bio-ink for extrusion-based additive manufacturing of inorganic materials at the decimeter scale. By embedding Sporosarcina pasteurii cells in bio-inks and printing porous structures, we enable controlled biocementation that enhances interlayer cohesion and overall mechanical performance at scales of tens of centimeters. We demonstrate that mineralization efficiency is consistent with transport-limited, reaction–diffusion-controlled precipitation modulated by surface area exposure and geometric porosity, allowing the tuning of macroscale properties through microscale design. Our results indicate that MICP enhances the printed structures and mitigates extrusion-printing issues that limit scaling, including weak interlayer adhesion and shrinkage. This work bridges the gap between biological and digital fabrication, establishing a pathway towards geometrically scalable, programmable, and low-embodied energy mineral materials.