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Proof of Concept (2022-06)

Sprayable SHCC Overlay Reinforcement Regime for Unreinforced 3D Printed Concrete Structure

10.1007/978-3-031-06116-5_63

 Cho Seung,  van den Heever Marchant,  Kruger Jacques,  van Zijl Gideon
Contribution - Proceedings of the 3rd RILEM International Conference on Concrete and Digital Fabrication, pp. 424-429

Abstract

Rebar penetration is the most common vertical reinforcement strategy for unreinforced 3D printed concrete (U3DPC) structures to improve the axial, flexural and shear capacities, and interlayer bondbehaviour.Despite the reasonable simplicity of the application either by a manual or automated system, the method may disturb the fresh material during insertion which may cause plastic yield or elastic buckling failure, in particular with ribbed rebars, and generally has a deficiency in bond behaviour with non-ribbed rebar. Sprayable strain-hardening cementitious composite (S-SHCC) overlay retrofit- ting has been extensively studied for shear and ductility enhancement of unreinforced masonry (URM) walls by several researchers. Depending on the overlay thickness and failure mode, the shear capacity can be increased by up to 465%. Due to the layer-by-layer construction nature of 3DPC, the similarity in structural behaviour of the U3DPC and URM is evident despite the apparent difference in interlayer bond strengths of the construction methodologies. Thus, the S-SHCC overlay retrofitting reinforcement regime may be applied to U3DPC structures to increase the mechanical resistance to applied loads. This paper introduces the reinforcement method, and presents experimental results ofenhanced in-plane and out-of-plane flexural behaviour of3DPCelements reinforced with thin, bonded SHCC layers.

6 References

  1. Bester Frederick, Heever Marchant, Kruger Jacques, Zijl Gideon (2020-11)
    Reinforcing Digitally Fabricated Concrete:
    A Systems Approach Review
  2. Heever Marchant, Bester Frederick, Kruger Jacques, Zijl Gideon (2021-07)
    Mechanical Characterisation for Numerical Simulation of Extrusion-Based 3D Concrete Printing
  3. Heever Marchant, Plessis Anton, Kruger Jacques, Zijl Gideon (2022-01)
    Evaluating the Effects of Porosity on the Mechanical Properties of Extrusion-Based 3D Printed Concrete
  4. Kruger Jacques, Zijl Gideon (2020-10)
    A Compendious Review on Lack-of-Fusion in Digital Concrete Fabrication
  5. Marchment Taylor, Sanjayan Jay (2020-09)
    Bond Properties of Reinforcing Bar Penetrations in 3D Concrete Printing
  6. Vantyghem Gieljan, Corte Wouter, Shakour Emad, Amir Oded (2020-01)
    3D Printing of a Post-Tensioned Concrete Girder Designed by Topology-Optimization

4 Citations

  1. Slavcheva Galina, Levchenko Artem, Artamonova Olga, Karakchi-Ogli Davut et al. (2025-12)
    Mechanical Behavior and Reinforcement Efficiency of 3D Printed Concrete Under Compression, Tension, and Bending
  2. Huseien Ghasan, Tan Shea, Saleh Ali, Lim Nor et al. (2024-08)
    Test-Procedures and Mechanical Properties of Three-Dimensional Printable Concrete Enclosing Different Mix-Proportions:
    A Review and Bibliometric Analysis
  3. Haar Bjorn, Kruger Jacques, Zijl Gideon (2024-04)
    Off-Site 3D Printed Concrete Beam Design and Fabrication
  4. Riaz Raja, Usman Muhammad, Ali Ammar, Majid Usama et al. (2023-06)
    Inclusive Characterization of 3D Printed Concrete in Additive Manufacturing:
    A Detailed Review

BibTeX 
@inproceedings{cho_heev_krug_zijl.2022.PoC,
  author            = "Seung Cho and Marchant van den Heever and Jacques Pienaar Kruger and Gideon Pieter Adriaan Greeff van Zijl",
  title             = "Proof of Concept: Sprayable SHCC Overlay Reinforcement Regime for Unreinforced 3D Printed Concrete Structure",
  doi               = "10.1007/978-3-031-06116-5_63",
  year              = "2022",
  volume            = "37",
  pages             = "424--429",
  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

S. Cho, M. van den Heever, J. P. Kruger and G. P. A. G. van Zijl, “Proof of Concept: Sprayable SHCC Overlay Reinforcement Regime for Unreinforced 3D Printed Concrete Structure”, in Proceedings of the 3rd RILEM International Conference on Concrete and Digital Fabrication: Digital Concrete 2022, 2022, vol. 37, pp. 424–429. doi: 10.1007/978-3-031-06116-5_63.

Cho, Seung, Marchant van den Heever, Jacques Pienaar Kruger, and Gideon Pieter Adriaan Greeff van Zijl. “Proof of Concept: Sprayable SHCC Overlay Reinforcement Regime for Unreinforced 3D Printed Concrete Structure”. In Proceedings of the 3rd RILEM International Conference on Concrete and Digital Fabrication: Digital Concrete 2022, edited by Richard A. Buswell, Ana Blanco, Sergio Cavalaro, and Peter Kinnell, 37:424–29, 2022. https://doi.org/10.1007/978-3-031-06116-5_63.