Evaluation of the Bond Strength Between 3D Printed and Self-Compacting Concrete (2022-06)¶

10.1007/978-3-031-06116-5_34

Bekaert Michiel, van Tittelboom Kim, de Schutter Geert
Contribution - Proceedings of the 3^rd RILEM International Conference on Concrete and Digital Fabrication, pp. 228-234

Abstract

Additive manufacturing is a perfect tool to manufacture topologically optimized elements. This is mostly done by 3D printing the contour of the desired element. As these printed constructions are hollow, their loadbearing capacity is limited. The use of a proper infill material can help to get rid of this shortcoming by properly integrating a conventional reinforcement system. Self-compacting concrete (SCC) seems an excellent material choice as it can flow into the irregular printed spaces. Not only the high flow properties are important, but the adhesion between the two types of concrete is of interest too. A good bond is needed to prevent delamination and assure a proper force transfer between the two materials. In this study, the bond strength between 3D printed and self-compacting concrete was tested. Linear 3D printed elements were cured at different conditions (dry and submerged in water) for different time periods (2, 6, 13 and 28 days) before casting SCC adjacent to it. After 28 days of curing of the SCC, cores were drilled out of the composite specimens and a direct tensile test was performed. Results showed that the bond strength between the two materials is neither dependent on the curing time of the printed material nor on the curing condition. However, the fracture plane does seem to be influenced by these factors. Specimens cured under water or specimens cured for a limited period tend to fail more at the interface between the two materials, while the ones cured in a dry environment or for a longer period do fail in the 3D printed material.

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1 References

Zhu Binrong, Nematollahi Behzad, Pan Jinlong, Zhang Yang et al. (2021-04)
3D Concrete Printing of Permanent Formwork for Concrete Column Construction

0 Citations

BibTeX

@inproceedings{beka_titt_schu.2022.EotBSB3PaSCC,
  author            = "Michiel Bekaert and Kim van Tittelboom and Geert de Schutter",
  title             = "Evaluation of the Bond Strength Between 3D Printed and Self-Compacting Concrete",
  doi               = "10.1007/978-3-031-06116-5_34",
  year              = "2022",
  volume            = "37",
  pages             = "228--234",
  booktitle         = "Proceedings of the 3rd RILEM International Conference on Concrete and Digital Fabrication: Digital Concrete 2022",
  editor            = "Richard A. Buswell and Ana Blanco and Sergio Cavalaro and Peter Kinnell",
}

Formatted Citation

IEEE

M. Bekaert, K. van Tittelboom and G. de Schutter, “Evaluation of the Bond Strength Between 3D Printed and Self-Compacting Concrete”, in Proceedings of the 3^rd RILEM International Conference on Concrete and Digital Fabrication: Digital Concrete 2022, 2022, vol. 37, pp. 228–234. doi: 10.1007/978-3-031-06116-5_34.

CMOS

Bekaert, Michiel, Kim van Tittelboom, and Geert de Schutter. “Evaluation of the Bond Strength Between 3D Printed and Self-Compacting Concrete”. In Proceedings of the 3^rd RILEM International Conference on Concrete and Digital Fabrication: Digital Concrete 2022, edited by Richard A. Buswell, Ana Blanco, Sergio Cavalaro, and Peter Kinnell, 37:228–34, 2022. https://doi.org/10.1007/978-3-031-06116-5_34.