Aluminate 2K systems in digital concrete: Process, design, chemistry, and outlook
Year: 2024
Type: article
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.
Source: Cement and Concrete Research
Institutions: ETH Zurich, Institute for Building Materials
Language: English
Subfield: Civil and Structural Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $5,260
Funders: Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung, Innosuisse - Schweizerische Agentur für Innovationsförderung, nccr – on the move, Swiss Re Foundation, Eidgenössische Anstalt für Wasserversorgung Abwasserreinigung und Gewässerschutz, Swiss National Centre of Competence in Research Kidney Control of Homeostasis, NCCR Catalysis
OpenAlex ID: W4401981977