DOI: 10.5937/jaes0-50408
This is an open access article distributed under the CC BY 4.0
Volume 22 article 1185 pages: 253-260
In the last few decades, the technology of 3D concrete printing (3DCP) has had a significant development. This technology has a great potential to improve efficiency in the construction industry. It can provide safer site working conditions, material savings, a reduction of construction time, and a high versatility of architectural and structural design. However, this new technology is still not fully investigated. The wider application is limited by the lack of standards and guidelines for design and production. The literature review showed that, there are only a few studies investigating structural behaviour of 3DCP structures and elements. Beams and walls with and without addition of fibers, reinforcement or cables under ultimate loads were tested. The incorporation of reinforcement in the printing process, connections between printed pieces and long-term behaviour of 3DCP elements under sustained load are opened questions. The topic of this research was an experimental testing of 3DCP truss girder. Printing of truss girder was done using a commercial, ready-to-use premix Sikacrete® 751 3D. In order to print, the printer head was moved in the Z direction to alternately place two desired path layers. A truss girder with dimensions of 87x29x12 cm, without reinforcement, was subjected to a four-point bending test up to failure. During this testing strains in two diagonals, deflection of the two bottom joints, and ultimate force were measured. Ultimate force was 30 kN and the brittle failure of tensioned bottom chord occurred. The force in tensioned diagonal was 13.45 kN and in the compressed one 36.77 kN. Additionally, three samples obtained from the top and bottom chords were tested on axial tension. The tension capacity of samples was 25.12 kN.
The authors gratefully acknowledge the support of Vojin Luković and Nenad Zorić from SIKA Serbia, which provided materials needed for experimental testing. For assistance in conducting the experimental part, the authors would like to thank their colleagues from the Laboratory for Materials and the Laboratory for Construction Faculty of Civil Engineering University of Belgrade, Marko Popović, Mladen Jović and Sava Stavnjak. This research was supported by the Ministry of Science, Technological Development, and Innovation of the Republic of Serbia (grant number 2000092).
1. Menna, C., Asprone, D., Auricchio, F., Pulieri, S., & Rezaie, F. (2020). Opportunities and challenges for structural engineering of digitally fabricated concrete. Cement and Concrete Research, 133, 106079. https://doi.org/10.1016/j.cemconres.2020.106079
2. Bhattacherjee, S., Basavaraj, A. S., Sanjayan, J. G., & Anand, A. (2021). Sustainable materials for 3D concrete printing. Cement and Concrete Composites, 122, 104156. https://doi.org/10.1016/j.cemconcomp.2021.104156
3. Asprone, D., Auricchio, F., Menna, C., & Mercuri, V. (2018). 3D printing of reinforced concrete elements: Technology and design approach. Construction and Building Materials, 165, 218-231. https://doi.org/10.1016/j.conbuildmat.2018.01.018
4. Hoffmann, M., Skibicki, S., Pankratow, P., Zieliński, A., Pajor, M., & Techman, M. (2020). Automation in the construction of a 3D-printed concrete wall with the use of a lintel gripper. Materials, 13(8), 1800. https://doi.org/10.3390/ma13081800
5. Mitrović, S., & Ignjatović, I. (2023). Hardened properties of 3D printed concrete – Experimental investigation. Proceedings of the 20th Symposium of the Macedonian Association of Structural Engineers, Skopje, Republic of North Macedonia (pp. 1052–1064).
6. Liu, W. G. K., Takasu, K., Jiang, J., & Zu, K. (2023). Mechanical properties of 3D printed concrete. Developments in the Built Environment.
7. Ignjatović, I., Mitrović, S., Dragaš, J., & Carević, V. (2022). Application of 3D concrete printing technology. Proceedings of the 16th Congress of the Association of Structural Engineers of Serbia, Aranđelovac, Serbia (pp. 458–469).
8. Khan, M. S., Sanchez, F., & Zhou, H. (2020). 3-D printing of concrete: Beyond horizons. Cement and Concrete Research, 133, 106070. https://doi.org/10.1016/J.CEMCONRES.2020.106070
9. CNN Style. (2019). Shanghai opens world’s longest 3D-printed concrete bridge. Retrieved from https://edition.cnn.com/style/article/shanghai-3d-printed-bridge-scli-intl/index.html
10. COBOD. (2022, May 27). COBOD customer makes 3D printed tiny house. Retrieved from https://cobod.com/cobod-customer-makes-3d-printed-tiny-house/
11. Gebhard, L., Esposito, L., Menna, C., & Mata-Falcón, J. (2022). Inter-laboratory study on the influence of 3D concrete printing set-ups on the bond behavior of various reinforcements. Cement and Concrete Composites, 133, 104660. https://doi.org/10.1016/j.cemconcomp.2022.104660
12. Buswell, R. A., Leal de Silva, W. R., Jones, S. Z., & Dirrenberger, J. (2018). 3D printing using concrete extrusion: A roadmap for research. Cement and Concrete Research, 112, 37–49. https://doi.org/10.1016/J.CEMCONRES.2018.05.006
13. Sanjayan, J. G., & Nematollahi, B. (2019). 3D concrete printing for construction applications. 3D Concrete Printing Technology: Construction and Building Applications (pp. 1–11). https://doi.org/10.1016/B978-0-12-815481-6.00001-4
14. Lyu F, Zhao D, Hou X, Sun L, Zhang Q. (2021). Overview of the Development of 3D-Printing Concrete: A Review. Applied Sciences. 2021; 11(21):9822. https://doi.org/10.3390/app11219822
15. Avrutis, D., Nazari, A., & Sanjayan, J. G. (2019). Industrial adoption of 3D concrete printing in the Australian market: Potentials and challenges. 3D Concrete Printing Technology (pp. 389–409). https://doi.org/10.1016/B978-0-12-815481-6.00019-1
16. Holt, C., Edwards, L., Keyte, L., Moghaddam, F., & Townsend, B. (2019). Construction 3D printing. 3D Concrete Printing Technology: Construction and Building Applications (pp. 349–370). https://doi.org/10.1016/B978-0-12-815481-6.00017-8
17. Pfleger, M. P., Geyer, S., & Holzl, C. (2023). Investigation to improve the carbon footprint of thin-walled concrete structures by 3D printing prefabricated elements.
18. Wang, L., Jiang, H., Li, Z., & Ma, G. (2020). Mechanical behaviors of 3D printed lightweight concrete structure with hollow section. Archives of Civil and Mechanical Engineering, 20(1). https://doi.org/10.1007/s43452-020-00017-1
19. Vantyghem, G., De Corte, W., Shakour, E., & Amir, O. (2020). 3D printing of a post-tensioned concrete girder designed by topology optimization. Automation in Construction, 112, 103084. https://doi.org/10.1016/j.autcon.2020.103084
20. Salet, T. A. M., Ahmed, Z. Y., Bos, F. P., & Laagland, H. L. M. (2018). Design of a 3D printed concrete bridge by testing. Virtual and Physical Prototyping, 13(3), 222–236. https://doi.org/10.1080/17452759.2018.1476064
21. Han, X., Yan, J., Liu, M., Huo, L., & Li, J. (2022). Experimental study on large-scale 3D printed concrete walls under axial compression. Automation in Construction, 133, 103993. https://doi.org/10.1016/j.autcon.2021.103993
22. Van den Heever, M., Bester, F., Kruger, J., & van Zijl, G. (2022). Numerical modeling strategies for reinforced 3D concrete printed elements. Additive Manufacturing, 50, 102569. https://doi.org/10.1016/j.addma.2021.102569
23. Aramburu, A., Calderon-Uriszar-Aldaca, I., & Puente, I. (2023). Parametric modeling of 3D printed concrete segmented beams with rebars under bending moments. Case Studies in Construction Materials, 18, e01910. https://doi.org/10.1016/j.cscm.2023.e01910
24. Sika. (2022). Sikacrete®-751/-752 3D one-component microconcrete 3D printing.