Long-term sulfate resistance of synthesized cement systems with variable C3A/C4AF ratio at low temperature or ambient conditions: Insights into the crystalline and amorphous phase assemblage

Synthesized cement systems made with variable C3A/C4AF ratios, containing C3S, gypsum and, optionally, calcite, were stored long-term at humid conditions at 5 or 20 °C, without any protection against atmospheric carbonation. Analytical techniques able to assess both the crystalline and amorphous pha...

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Bibliographic Details
Published in:Cement and concrete research 2022-10, Vol.160, p.106902, Article 106902
Main Authors: Sotiriadis, Konstantinos, Mróz, Radosław, Mácová, Petra, Mazur, Anton S., Krajnc, Andraž
Format: Article
Language:English
Subjects:
Aluminate phases
Carbonation
EPR spectroscopy
Solid-state NMR spectroscopy
Sulfate resistance
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Summary:Synthesized cement systems made with variable C3A/C4AF ratios, containing C3S, gypsum and, optionally, calcite, were stored long-term at humid conditions at 5 or 20 °C, without any protection against atmospheric carbonation. Analytical techniques able to assess both the crystalline and amorphous phases were used. Experimental results were compared with thermodynamic simulations. The systems with C3A/C4AF 
ISSN:0008-8846
1873-3948
DOI:10.1016/j.cemconres.2022.106902