Influence of aluminium on the hydration of triclinic C3S with addition of KOH solution
Wagner D, Bellmann F, Neubauer J (2020)
Publication Type: Journal article
Publication year: 2020
Journal
Book Volume: 137
Article Number: 106198
DOI: 10.1016/j.cemconres.2020.106198
Abstract
In this work we studied two samples of triclinic C3S. Namely pure triclinic C3S with no addition of foreign ions and triclinic C3S doped with 0.5 wt.-% Al2O3 to investigate the influence of aluminium on the hydration of C3S in the first 24 h and additionally the effect of KOH solution. During hydration Al-doped C3S shows lower reaction rates in the acceleration period compared to pure C3S. Al ions lead to precipitation of C-A-S-H phase and reduces the overall reactive surface area of C-S-H. Furthermore, Al ions in solution decrease the supersaturation of C-S-H during hydration and therefore the precipitation rates are lower for the Al-doped C3S. The addition of KOH solution leads to a general acceleration of reaction for both C3S samples, but at a concentration of 0.3 mol/L KOH both samples show comparable reaction rates during the main hydration event and the effect of Al is reversed.
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APA:
Wagner, D., Bellmann, F., & Neubauer, J. (2020). Influence of aluminium on the hydration of triclinic C3S with addition of KOH solution. Cement and Concrete Research, 137. https://dx.doi.org/10.1016/j.cemconres.2020.106198
MLA:
Wagner, Daniel, Frank Bellmann, and Jürgen Neubauer. "Influence of aluminium on the hydration of triclinic C3S with addition of KOH solution." Cement and Concrete Research 137 (2020).
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