3D Printing of an Iron-Rich Slag-Based Hybrid Mortar (2023-09)¶

A Durable, Sustainable and Cost-Competitive Product?

10.1016/j.cemconcomp.2023.105304

Beersaerts Glenn, Soete Jeroen, Giels Michiel, Eykens Lies, Lucas Sandra, Pontikes Yiannis
Journal Article - Cement and Concrete Composites, No. 105304

Abstract

Automation through 3D printing can be a possible technological breakthrough in construction. However, the carbon footprint is not necessarily reduced as the print formulations consist of more ordinary Portland cement (OPC) compared to conventional high-performance mortar. In this study, a hybrid mortar with minor amount of OPC and mainly Fe-rich, low-Ca slag is used for printing several structures, followed by a profound study on the durability properties of the printed material. The hybrid mortar outperformed the benchmark with respect to its compressive strength (80.5 ± 4.3 MPa versus 52.4 ± 1.7 MPa) and drying shrinkage (0.8 mm/m versus 1.3 mm/m). The capillary pores present in the printed hybrid resulted in a lower freeze-thaw resistance. Leaching tests showed that the hybrid binder immobilized heavy metals. The hybrid mortar has a CO2 impact between 164 kg CO2/m3 and 548 kg CO2/m3, and costs range from 129 to 193 euro/m3. This study showed that the hybrid mortar can offer a suitable alternative to 3D-printable OPC-mortars.

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25 References

10 Citations

BibTeX

@article{beer_soet_giel_eyke.2023.3PoaIRSBHM,
  author            = "Glenn Beersaerts and Jeroen Soete and Michiel Giels and Lies Eykens and Sandra Simaria de Oliveira Lucas and Yiannis Pontikes",
  title             = "3D Printing of an Iron-Rich Slag-Based Hybrid Mortar: A Durable, Sustainable and Cost-Competitive Product?",
  doi               = "10.1016/j.cemconcomp.2023.105304",
  year              = "2023",
  journal           = "Cement and Concrete Composites",
  pages             = "105304",
}

Formatted Citation

IEEE

G. Beersaerts, J. Soete, M. Giels, L. Eykens, S. S. de Oliveira Lucas and Y. Pontikes, “3D Printing of an Iron-Rich Slag-Based Hybrid Mortar: A Durable, Sustainable and Cost-Competitive Product?”, Cement and Concrete Composites, p. 105304, 2023, doi: 10.1016/j.cemconcomp.2023.105304.

CMOS

Beersaerts, Glenn, Jeroen Soete, Michiel Giels, Lies Eykens, Sandra Simaria de Oliveira Lucas, and Yiannis Pontikes. “3D Printing of an Iron-Rich Slag-Based Hybrid Mortar: A Durable, Sustainable and Cost-Competitive Product?”. Cement and Concrete Composites, 2023, 105304. https://doi.org/10.1016/j.cemconcomp.2023.105304.