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A Robust Mortar and Printing System (2020-07)

10.1007/978-3-030-49916-7_104

 Blaakmeer Jan, Lobo B.
Contribution - Proceedings of the 2nd RILEM International Conference on Concrete and Digital Fabrication, pp. 1091-1103

Abstract

In this paper the motivation and the choices for a mortar that is being used in the print factory jointly owned by Weber Beamix and BAM is discussed in general. Attention will be given to the choice of binder for the mortar. The results obtained during quality control from a large project will clearly show that with this mortar concept monolithic objects can be obtained with no influence of the printing direction on the parameters measured (compressive strength and flexural strength). Also some results from interfacial fracture toughness measurements will be presented. These results also indicate the formation of monolithic material. Results of durability tests (frost/thaw de-icing salt resistance) will be presented showing that this material is safe to use in outdoor applications. The printing system with an in-line quality monitoring system of the fresh mortar will be presented. The modifications of the mixing unit have led to a finely controlled water dosage during the mixing step of the mortar. With the in-line sensor, measuring the yield of the pump, the viscosity and the density of the pumped mortar, it has been possible to implement a feedback loop to the water dosage and to the yield of the pump. The yield of the pump is very important especially when layers adjacent to each other are required to form a monolithic structure. With the feedback loop of the viscosity measurements to the water dosage it has been possible to print with this mortar with a very low water dosage over long periods of time (6–8 h.) and still not having issues with blockage of hoses etc.

0 References

7 Citations

  1. Mishra Sanjeet, Snehal K., Das B., Chandrasekaran Rajasekaran et al. (2025-05)
    From Printing to Performance:
    A Review on 3D Concrete Printing Processes, Materials, and Life Cycle Assessment
  2. Givkashi Mohammad, Tohidloo Mohammad (2024-07)
    The Effect of Freeze-Thaw-Cycles and Sulfuric-Acid-Attack Separately on the Compressive Strength and Microstructure of 3D Printed Air-Entrained Concrete
  3. Du Longyu, Zhou Jiehang, Lai Jianzhong, Wu Kai et al. (2023-07)
    Effect of Pore-Structure on Durability and Mechanical Performance of 3D Printed Concrete
  4. Spuriņa Ella, Šinka Māris, Ziemelis Krists, Bajāre Diāna (2023-01)
    The Effects of 3D Printing on Frost-Resistance of Concrete
  5. Rodriguez Fabian, Lopez Cristian, Wang Yu, Olek Jan et al. (2022-06)
    Evaluation of Durability of 3D Printed Cementitious Materials for Potential Applications in Structures Exposed to Marine Environments
  6. Woo Seong-Jin, Yang Jun-Mo, Lee Hojae, Kwon Hongkyu (2021-10)
    Comparison of Properties of 3D Printed Mortar in Air vs. Underwater
  7. Rehman Atta, Kim Jung-Hoon (2021-07)
    3D Concrete Printing:
    A Systematic Review of Rheology, Mix Designs, Mechanical, Microstructural, and Durability Characteristics

BibTeX 
@inproceedings{blaa_lobo.2020.ARMaPS,
  author            = "Jan Blaakmeer and B. Lobo",
  title             = "A Robust Mortar and Printing System",
  doi               = "10.1007/978-3-030-49916-7_104",
  year              = "2020",
  volume            = "28",
  pages             = "1091--1103",
  booktitle         = "Proceedings of the 2nd RILEM International Conference on Concrete and Digital Fabrication: Digital Concrete 2020",
  editor            = "Freek Paul Bos and Sandra Simaria de Oliveira Lucas and Robert Johannes Maria Wolfs and Theo A. M. Salet",
}
Formatted Citation

J. Blaakmeer and B. Lobo, “A Robust Mortar and Printing System”, in Proceedings of the 2nd RILEM International Conference on Concrete and Digital Fabrication: Digital Concrete 2020, 2020, vol. 28, pp. 1091–1103. doi: 10.1007/978-3-030-49916-7_104.

Blaakmeer, Jan, and B. Lobo. “A Robust Mortar and Printing System”. In Proceedings of the 2nd RILEM International Conference on Concrete and Digital Fabrication: Digital Concrete 2020, edited by Freek Paul Bos, Sandra Simaria de Oliveira Lucas, Robert Johannes Maria Wolfs, and Theo A. M. Salet, 28:1091–1103, 2020. https://doi.org/10.1007/978-3-030-49916-7_104.