Advanced search
1 file | 788.76 KB Add to list

Combination of Portland cement and calcium-sulfoAluminate cement : the highroad for durable 3D printing ?

Author
Organization
Abstract
3D printing of cementitious materials opens new horizons for the construction industry. This newly developed technique uses a layer-by-layer fabrication process, inducing a higher porosity at the interface between the printed filaments. Consequently, this interface zone offers an ideal ingress path for chemical substances and affects the durability in a negative way. This in combination with a high content of ordinary Portland cement (OPC) in the composition of printable mixtures counteracts the many advantages of the construction type and decreases the eco-friendliness of the material drastically. To improve the "green" character of 3D printed cementitious materials, combinations of OPC and Calcium-Sulfoaluminate (CSA) cement are often made. This combination shows advancements regarding the evolution of cement hydration, but the expansive character of CSA cement also leads to the formation of additional voids which will affect the microstructure in a significant way. For the purpose of this research, 4 different mix compositions with OPC replacements up to 20% have been prepared and their effect in fresh state is investigated through measurements and isothermal calorimetry (TAM AIR). Scanning Electron Microscopy (SEM) analysis was performed on two layered printed specimens to examine the effect on the microstructure in hardened state and correlate the results with the mechanical performance, measured by compressive test and inter-layer bonding tests. These results showed that the setting time is lower for every combination of OPC and CSA, creating mixtures with a higher buildability. Due to the low amount of anhydrite, the expansive character of CSA is most pronounced in case of 10% and 15% OPC replacement, resulting in a higher amount of capillary pores and affecting the mechanical performance in the most negative way.
Keywords
3D printing, Calcium-sulfoaluminate cement, setting time, porosity, hydration

Downloads

  • (...).pdf
    • full text (Published version)
    • |
    • UGent only
    • |
    • PDF
    • |
    • 788.76 KB

Citation

Please use this url to cite or link to this publication:

MLA
Van Der Putten, Jolien, et al. “Combination of Portland Cement and Calcium-SulfoAluminate Cement : The Highroad for Durable 3D Printing ?” RheoCon2 & SCC9, Proceedings, 2019, pp. 1–9.
APA
Van Der Putten, J., Azima, M., Lesage, K., De Schutter, G., & Van Tittelboom, K. (2019). Combination of Portland cement and calcium-sulfoAluminate cement : the highroad for durable 3D printing ? In RheoCon2 & SCC9, Proceedings (pp. 1–9). Dresden.
Chicago author-date
Van Der Putten, Jolien, Mahzad Azima, Karel Lesage, Geert De Schutter, and Kim Van Tittelboom. 2019. “Combination of Portland Cement and Calcium-SulfoAluminate Cement : The Highroad for Durable 3D Printing ?” In RheoCon2 & SCC9, Proceedings, 1–9.
Chicago author-date (all authors)
Van Der Putten, Jolien, Mahzad Azima, Karel Lesage, Geert De Schutter, and Kim Van Tittelboom. 2019. “Combination of Portland Cement and Calcium-SulfoAluminate Cement : The Highroad for Durable 3D Printing ?” In RheoCon2 & SCC9, Proceedings, 1–9.
Vancouver
1.
Van Der Putten J, Azima M, Lesage K, De Schutter G, Van Tittelboom K. Combination of Portland cement and calcium-sulfoAluminate cement : the highroad for durable 3D printing ? In: RheoCon2 & SCC9, Proceedings. 2019. p. 1–9.
IEEE
[1]
J. Van Der Putten, M. Azima, K. Lesage, G. De Schutter, and K. Van Tittelboom, “Combination of Portland cement and calcium-sulfoAluminate cement : the highroad for durable 3D printing ?,” in RheoCon2 & SCC9, Proceedings, Dresden, 2019, pp. 1–9.
@inproceedings{8631266,
  abstract     = {{3D printing of cementitious materials opens new horizons for the construction industry. This newly developed technique uses a layer-by-layer fabrication process, inducing a higher porosity at the interface between the printed filaments. Consequently, this interface zone offers an ideal ingress path for chemical substances and affects the durability in a negative way. This in combination with a high content of ordinary Portland cement (OPC) in the composition of printable mixtures counteracts the many advantages of the construction type and decreases the eco-friendliness of the material drastically. To improve the "green" character of 3D printed cementitious materials, combinations of OPC and Calcium-Sulfoaluminate (CSA) cement are often made. This combination shows advancements regarding the evolution of cement hydration, but the expansive character of CSA cement also leads to the formation of additional voids which will affect the microstructure in a significant way. For the purpose of this research, 4 different mix compositions with OPC replacements up to 20% have been prepared and their effect in fresh state is investigated through measurements and isothermal calorimetry (TAM AIR). Scanning Electron Microscopy (SEM) analysis was performed on two layered printed specimens to examine the effect on the microstructure in hardened state and correlate the results with the mechanical performance, measured by compressive test and inter-layer bonding tests. These results showed that the setting time is lower for every combination of OPC and CSA, creating mixtures with a higher buildability. Due to the low amount of anhydrite, the expansive character of CSA is most pronounced in case of 10% and 15% OPC replacement, resulting in a higher amount of capillary pores and affecting the mechanical performance in the most negative way.}},
  author       = {{Van Der Putten, Jolien and Azima, Mahzad and Lesage, Karel and De Schutter, Geert and Van Tittelboom, Kim}},
  booktitle    = {{RheoCon2 & SCC9, Proceedings}},
  keywords     = {{3D printing,Calcium-sulfoaluminate cement,setting time,porosity,hydration}},
  language     = {{eng}},
  location     = {{Dresden}},
  pages        = {{1--9}},
  title        = {{Combination of Portland cement and calcium-sulfoAluminate cement : the highroad for durable 3D printing ?}},
  year         = {{2019}},
}