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Concrete 3D Printing and Reinforcement (2025-06)

Determination of Bond Strength Through Pull-Out Tests

Ewerz Johannes,  Pfleger Marc-Patrick,  Radl Elisabeth, Huber Patrick
Contribution - Proceedings of the fib Symposium 2025

Abstract

This paper presents recent experimental test results on the bond behavior of 3D printed concrete specimens with embedded conventional steel rebars, focusing on different material behavior depending on the material layer orientation. The investigations include pull-out tests according to European standards (ÖNORM EN 10080:2005) as well as compressive strength tests according to ÖNORM EN 12390-1. Specimens with different material layer layouts were produced. A systematic determination of the shear parameters shows that the layer orientation of the printed concrete has a significant influence on the bond-slip behavior. In addition, preliminary tests were carried out, showing the effect on the bonding conditions depending on the duration of the print interruption during the insertion of the rebars.

4 References

  1. Gebhard Lukas, Bischof Patrick, Anton Ana-Maria, Mata-Falcón Jaime et al. (2022-06)
    Pre-Installed Reinforcement for 3D Concrete Printing
  2. Gebhard Lukas, Esposito Laura, Menna Costantino, Mata-Falcón Jaime (2022-07)
    Inter-Laboratory Study on the Influence of 3D Concrete Printing Set-Ups on the Bond Behavior of Various Reinforcements
  3. Hass Lauri, Bos Freek (2020-07)
    Bending and Pull-Out Tests on a Novel Screw Type Reinforcement for Extrusion-Based 3D Printed Concrete
  4. Pfleger Marc-Patrick, Geyer Sebastian, Hölzl Christian, Vill Markus (2023-06)
    Investigations to Improve the Carbon Footprint of Thin Walled Concrete Structures by 3D Printing Prefabricated Elements

0 Citations

BibTeX 
@inproceedings{ewer_pfle_radl_hube.2025.C3PaR,
  author            = "Johannes Ewerz and Marc-Patrick Pfleger and Elisabeth Radl and Patrick Huber",
  title             = "Concrete 3D Printing and Reinforcement: Determination of Bond Strength Through Pull-Out Tests",
  year              = "2025",
  booktitle         = "Proceedings of the fib Symposium 2025: Concrete Structures",
  editor            = "fédération internationale du béton",
}
Formatted Citation

J. Ewerz, M.-P. Pfleger, E. Radl and P. Huber, “Concrete 3D Printing and Reinforcement: Determination of Bond Strength Through Pull-Out Tests”, in Proceedings of the fib Symposium 2025: Concrete Structures, 2025.

Ewerz, Johannes, Marc-Patrick Pfleger, Elisabeth Radl, and Patrick Huber. “Concrete 3D Printing and Reinforcement: Determination of Bond Strength Through Pull-Out Tests”. In Proceedings of the Fib Symposium 2025: Concrete Structures, edited by fédération internationale du béton, 2025.