Opening Letter of RILEM TC CSA: Calcium sulfoaluminate-based cement and concrete – Critical review and open questions

Eric Bescher; Sabina Dolenec; Daniel Jansen; Thomas Matschei; Cameron Murray; Julio Paniagua; Elsa Qoku; Antonio Telesca; Robert Thomas; Frank Winnefeld

doi:10.21809/rilemtechlett.2025.231

Opening Letter of RILEM TC CSA: Calcium sulfoaluminate-based cement and concrete – Critical review and open questions

Authors

Eric Bescher Department of Materials Science and Engineering, University of California Los Angeles
Sabina Dolenec Slovenian National Building and Civil Engineering Institute and Faculty of Natural Sciences and Engineering, University of Ljubljana
Daniel Jansen Mineralogy, GeoZentrum Nordbayern, University of Erlangen-Nuremberg
Thomas Matschei Institute of Building Materials Research, RWTH Aachen University
Cameron Murray Department of Civil Engineering, University of Arkansas
Julio Paniagua CTS Cement Manufacturing Corporation
Elsa Qoku Institute of Building Materials Research, RWTH Aachen University
Antonio Telesca Department of Engineering, University of Basilicata
Robert Thomas Department of Civil and Environmental Engineering, Clarkson University
Frank Winnefeld Laboratory for Concrete and Asphalt, Empa

DOI:

https://doi.org/10.21809/rilemtechlett.2025.231

Keywords:

Calcium sulfoaluminate cement, Ye'elimite, Belite, Ettringite, Low-CO2 cement

Abstract

Calcium sulfoaluminate (CSA)-based cements represent a promising alternative to traditional Portland cement, offering benefits such as rapid strength development, low shrinkage, and reduced carbon footprint. Despite their commercial availability and proven performance, the adoption of CSA cements remains hindered by gaps in standardization and understanding. This RILEM Technical Committee (TC) CSA aims to review current knowledge, identify research needs, and address challenges related to clinkering, hydration mechanisms, durability, applications, nomenclature, standardization, and testing of CSA-based cements. The outcomes will further the understanding of manufacturing, technical performance, use, and specification of CSA-based cements, ultimately leading to broader acceptance in concrete construction.

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Published

18.12.2025

How to Cite

(1)

Bescher, E.; Dolenec, S.; Jansen, D.; Matschei, T.; Murray, C.; Paniagua, J.; Qoku, E.; Telesca, A.; Thomas, R.; Winnefeld, F. Opening Letter of RILEM TC CSA: Calcium Sulfoaluminate-Based Cement and Concrete – Critical Review and Open Questions. RILEM Tech Lett 2025, 10, 106-118.

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Issue

Vol. 10 (2025)

Section

Articles

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