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Adhesion evaluation and interface characterization of 3D printed concrete for automatic repair

Yaxin Tao (UGent) , Yi Zhang (UGent) , Xiaoyun Wang (UGent) , Jose R. A. Godinho, Geert De Schutter (UGent) and Kim Van Tittelboom (UGent)
(2024) CONSTRUCTION AND BUILDING MATERIALS. 414.
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Abstract
3D concrete printing can be used for automatic repair, aiming at increasing efficiency and reducing the use of manpower, as compared to conventional manual repair. Ensuring strong adhesion of the 3D printed materials and characterizing the interface is crucial for the success of this approach. To this end, we first evaluated the adhesion performance of 3D printed concrete based on a low-carbon binder, i.e., calcium sulfoaluminate (CSA) cement. CSA cement pastes with different re-dispersible polymer powder substitution rates were used as coating before 3D printing. We used two approaches, X-ray computed tomography (CT) and scanning electron microscopy (SEM), to characterize the interface region. Results indicate that the yield stress of the 3D printing material and the coating material plays an important role in the adhesion in both the fresh and hardened state. Moreover, the limited adhesion at the overlay interface can be due to the limited contact at the centimeter and micro scale, as reflected by CT and SEM, respectively. Applying a coating can fill the air voids at the interface, while the placement of a coating may not improve the bond strength and can even have a negative impact due to the limited liquid medium at the interface.
Keywords
Adhesion, 3D concrete printing, Automatic repair, Coating, Interface characterization, Low -carbon, BOND STRENGTH, CEMENT PASTES, PERFORMANCE, ROUGHNESS, SHRINKAGE, MORTAR

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Citation

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MLA
Tao, Yaxin, et al. “Adhesion Evaluation and Interface Characterization of 3D Printed Concrete for Automatic Repair.” CONSTRUCTION AND BUILDING MATERIALS, vol. 414, Elsevier Sci LTD, 2024, doi:10.1016/j.conbuildmat.2024.134952.
APA
Tao, Y., Zhang, Y., Wang, X., Godinho, J. R. A., De Schutter, G., & Van Tittelboom, K. (2024). Adhesion evaluation and interface characterization of 3D printed concrete for automatic repair. CONSTRUCTION AND BUILDING MATERIALS, 414. https://doi.org/10.1016/j.conbuildmat.2024.134952
Chicago author-date
Tao, Yaxin, Yi Zhang, Xiaoyun Wang, Jose R. A. Godinho, Geert De Schutter, and Kim Van Tittelboom. 2024. “Adhesion Evaluation and Interface Characterization of 3D Printed Concrete for Automatic Repair.” CONSTRUCTION AND BUILDING MATERIALS 414. https://doi.org/10.1016/j.conbuildmat.2024.134952.
Chicago author-date (all authors)
Tao, Yaxin, Yi Zhang, Xiaoyun Wang, Jose R. A. Godinho, Geert De Schutter, and Kim Van Tittelboom. 2024. “Adhesion Evaluation and Interface Characterization of 3D Printed Concrete for Automatic Repair.” CONSTRUCTION AND BUILDING MATERIALS 414. doi:10.1016/j.conbuildmat.2024.134952.
Vancouver
1.
Tao Y, Zhang Y, Wang X, Godinho JRA, De Schutter G, Van Tittelboom K. Adhesion evaluation and interface characterization of 3D printed concrete for automatic repair. CONSTRUCTION AND BUILDING MATERIALS. 2024;414.
IEEE
[1]
Y. Tao, Y. Zhang, X. Wang, J. R. A. Godinho, G. De Schutter, and K. Van Tittelboom, “Adhesion evaluation and interface characterization of 3D printed concrete for automatic repair,” CONSTRUCTION AND BUILDING MATERIALS, vol. 414, 2024.
@article{01HRA0BN7TJR5JCZP68BZW1CZB,
  abstract     = {{3D concrete printing can be used for automatic repair, aiming at increasing efficiency and reducing the use of manpower, as compared to conventional manual repair. Ensuring strong adhesion of the 3D printed materials and characterizing the interface is crucial for the success of this approach. To this end, we first evaluated the adhesion performance of 3D printed concrete based on a low-carbon binder, i.e., calcium sulfoaluminate (CSA) cement. CSA cement pastes with different re-dispersible polymer powder substitution rates were used as coating before 3D printing. We used two approaches, X-ray computed tomography (CT) and scanning electron microscopy (SEM), to characterize the interface region. Results indicate that the yield stress of the 3D printing material and the coating material plays an important role in the adhesion in both the fresh and hardened state. Moreover, the limited adhesion at the overlay interface can be due to the limited contact at the centimeter and micro scale, as reflected by CT and SEM, respectively. Applying a coating can fill the air voids at the interface, while the placement of a coating may not improve the bond strength and can even have a negative impact due to the limited liquid medium at the interface.}},
  articleno    = {{134952}},
  author       = {{Tao, Yaxin and Zhang, Yi and Wang, Xiaoyun and  Godinho, Jose R. A. and De Schutter, Geert and Van Tittelboom, Kim}},
  issn         = {{0950-0618}},
  journal      = {{CONSTRUCTION AND BUILDING MATERIALS}},
  keywords     = {{Adhesion,3D concrete printing,Automatic repair,Coating,Interface characterization,Low -carbon,BOND STRENGTH,CEMENT PASTES,PERFORMANCE,ROUGHNESS,SHRINKAGE,MORTAR}},
  language     = {{eng}},
  pages        = {{13}},
  publisher    = {{Elsevier Sci LTD}},
  title        = {{Adhesion evaluation and interface characterization of 3D printed concrete for automatic repair}},
  url          = {{http://doi.org/10.1016/j.conbuildmat.2024.134952}},
  volume       = {{414}},
  year         = {{2024}},
}
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