3D Printable Engineered Cementitious Composites (2021-02)¶

Fresh and Hardened Properties

10.1016/j.cemconres.2021.106388

Yu Kequan, McGee Wesley, Ng Tsz, Zhu He, Li Victor
Journal Article - Cement and Concrete Research, Vol. 143

Abstract

3D printing (3DP) is an emerging digital construction method for concrete materials. A major impediment to efficient 3D concrete printing (3DCP) is the need for steel reinforcement, the placement of which is incompatible with the 3DP process. Unlike plain concrete, ductile self-reinforced engineered cementitious composite (ECC) holds promise to remove the dependence on steel reinforcement. The objective of this research is to develop a 3D-printable ECC (3DP-ECC). The fresh rheological and hardened mechanical properties of 3DP-ECC are investigated. The robotically printed tensile specimens demonstrated the familiar multiple microcracking and strain-hardening behavior of conventionally cast ECC. Significant orthotropy is revealed in the compressive properties. The interface between printed layers is found to be toughened by a printed groove-tongue joint. The developed 3DP-ECC was used to print a twisted column with 150 layers, reaching a height of 1.5 m. This research lays the groundwork for efficient robotically 3D-printed structures of complex shapes.

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29 References

132 Citations

BibTeX

@article{yu_mcge_ng_zhu.2021.3PECC,
  author            = "Kequan Yu and Wesley McGee and Tsz Yan Ng and He Zhu and Victor C. Li",
  title             = "3D Printable Engineered Cementitious Composites: Fresh and Hardened Properties",
  doi               = "10.1016/j.cemconres.2021.106388",
  year              = "2021",
  journal           = "Cement and Concrete Research",
  volume            = "143",
}

Formatted Citation

IEEE

K. Yu, W. McGee, T. Y. Ng, H. Zhu and V. C. Li, “3D Printable Engineered Cementitious Composites: Fresh and Hardened Properties”, Cement and Concrete Research, vol. 143, 2021, doi: 10.1016/j.cemconres.2021.106388.

CMOS

Yu, Kequan, Wesley McGee, Tsz Yan Ng, He Zhu, and Victor C. Li. “3D Printable Engineered Cementitious Composites: Fresh and Hardened Properties”. Cement and Concrete Research 143 (2021). https://doi.org/10.1016/j.cemconres.2021.106388.