A preliminary study of thermodynamic modelling of calcium sulfoaluminate ce- ment-based material

Author(s): Yoon, H.N., Park, S.M., Kil, T.G. and Lee, H.K.
Paper category: Proceedings
Book title: Proceedings of the International Conference on Sustainable Materials, Systems and Structures (SMSS2019) New Generation of Construction Materials
Editor(s): Marijana Serdar, Nina Štirmer, John Provis
ISBN: 978-2-35158-217-6,
Vol 1. ISBN: 978-2-35158-223-7
e-ISBN: 978-2-35158-218-3
Publisher: RILEM Publications SARL
Publication year: 2019
Pages: 418-423
Total Pages: 6
Language : English

Abstract: Ordinary Portland cement (OPC) is the most commonly used construction material, however, it produces a lot of CO2 during its manufacturing process [1,2]. Calcium sulfoaluminate (CSA) cement has been attracted attention due to its reduced CO2 footprint during the production, in comparison with that of OPC [2,3]. The production, hydration process, characteristics, and physicochemical properties of CSA cement have been widely investigated, while their durability aspects has still to be revealed. In this regard, this paper provides an overview on the current understanding and perspectives of the durability of CSA cement-based material. In addition, a preliminary study on thermodynamic modelling of the phase development of CSA cement blended with slag was investigated. The preliminary study indicated that the replacement of slag affected the formation of ettringite, monosulfate, aluminium hydroxide, and strätlingite of CSA cement-based materials. The volume of
ettringite, monosulfate, and aluminium hydroxide decrease as the replacement of slag content increases. In the future research, the experiments on the chemical reactions of CSA cement blended with slag will be conducted and will be compared to results of the thermodynamic modelling.

Online publication : 2019
Publication type : full_text
Public price (Euros) : 0.00