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Aluminate 2K Systems in Digital Concrete (2024-08)

Process, Design, Chemistry, and Outlook

10.1016/j.cemconres.2024.107644

 Wangler Timothy,  Tao Yaxin, Das Arnesh, Mahmoudi Matineh,  Gürel Şeyma,  Flatt Robert
Journal Article - Cement and Concrete Research, Vol. 185, No. 107644

Abstract

Digital concrete is advancing due to growing economic incentives for construction automation. Achieving more sustainable concrete construction requires carbon reduction, and digital concrete technologies enable material-saving designs. By decoupling production strength from design strength, two-component (2K) systems utilizing aluminate precipitation offer the most flexibility, allowing more sustainable mixes with higher substitution levels. However, 2K aluminate systems are complex and demand a deeper understanding of their chemistry and strength buildup. This article reviews the basics of 2K aluminate systems, specifically aluminum sulfate-based and calcium aluminate cement/calcium sulfate-based systems, and their use in an inline active mixing reactor. An example reaction engineering analysis predicts the degree of reaction in a given reactor design, relating it to yield stress. The two chemical systems are compared, and future research recommendations are provided.

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BibTeX 
@article{wang_tao_das_mahm.2024.A2SiDC,
  author            = "Timothy Paul Wangler and Yaxin Tao and Arnesh Das and Matineh Mahmoudi and Şeyma Gürel and Robert Johann Flatt",
  title             = "Aluminate 2K Systems in Digital Concrete: Process, Design, Chemistry, and Outlook",
  doi               = "10.1016/j.cemconres.2024.107644",
  year              = "2024",
  journal           = "Cement and Concrete Research",
  volume            = "185",
  pages             = "107644",
}
Formatted Citation

T. P. Wangler, Y. Tao, A. Das, M. Mahmoudi, Ş. Gürel and R. J. Flatt, “Aluminate 2K Systems in Digital Concrete: Process, Design, Chemistry, and Outlook”, Cement and Concrete Research, vol. 185, p. 107644, 2024, doi: 10.1016/j.cemconres.2024.107644.

Wangler, Timothy Paul, Yaxin Tao, Arnesh Das, Matineh Mahmoudi, Şeyma Gürel, and Robert Johann Flatt. “Aluminate 2K Systems in Digital Concrete: Process, Design, Chemistry, and Outlook”. Cement and Concrete Research 185 (2024): 107644. https://doi.org/10.1016/j.cemconres.2024.107644.