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Published on: March 7, 2025
Unlocking toughness in 3D-printed cement through bio-inspired designs: current status and future perspectives
Lei Fan1,2, Xiaohan Ji1,2, Chengtao Wu1,2
1School of Civil Engineering and Architecture, Zhejiang University of Science & Technology Hangzhou PR China 121099@zust.edu.cn.
Researchers are using 3D printing to create advanced bio-inspired cementitious composites. These materials mimic natural structures, combining strength and toughness for improved construction applications.
Area of Science:
- Materials Science
- Biomimetics
- Additive Manufacturing
Background:
- Conventional cementitious materials suffer from inherent brittleness.
- Natural biological structures offer inspiration for enhanced material properties.
- Three-dimensional (3D) printing enables precise fabrication of complex architectures.
Purpose of the Study:
- To review recent advancements in bio-inspired cementitious composites fabricated via 3D printing.
- To highlight the integration of natural design principles with modern manufacturing techniques.
- To discuss challenges and future directions in this interdisciplinary field.
Main Methods:
- Systematic review of literature on bio-inspired cementitious materials.
- Analysis of composition, structure, design principles, and fabrication methods.
- Examination of bio-inspired toughening strategies and mechanical models.
- Discussion on the integration of bio-inspired concepts with 3D printing technology.
Main Results:
- Novel cementitious composites achieve a synergistic combination of high strength and toughness.
- 3D printing allows for the replication of natural architectures, like nacre's "brick-and-mortar" structure.
- Precise organization of hard cementitious and soft polymeric phases across multiple scales is key.
Conclusions:
- Bio-inspired cementitious composites fabricated by 3D printing show significant promise.
- Further research is needed to overcome obstacles for widespread engineering applications.
- Future directions include refining design principles and exploring new material combinations.
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