Hydration of C3S in presence of CA: Mineral‐pore solution interaction

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Details zur Publikation

Autorinnen und Autoren: Nehring J, Jansen D, Neubauer J, Götz-Neunhoeffer F
Zeitschrift: Journal of the American Ceramic Society
Jahr der Veröffentlichung: 2019
Band: 102
Heftnummer: 6
Seitenbereich: 3152-3162
ISSN: 1551-2916


S and CA are the main phases of OPC and Fe-rich CAC, respectively. The objective of this research was to investigate the influence of CA on C
S hydration, representing an under sulfated OPC-rich binder, and to shed light on the underlying hydration mechanisms. To this end, C
S was blended with 1-30 wt-% CA and the pastes (w/c 0.5) were investigated by heat flow calorimetry, in situ X-ray diffraction and analysis of the pore solution chemistry. CA additions ≥5 wt-% reveal a separation into three distinct heat flow maxima, whereas additions ≤3 wt-% just retard the start of the main reaction. The silicate reaction (dissolution of C
S and precipitation of C–S–H with or without CH) can be retarded for 4 to ≥22 hours in comparison to pure C
S depending on the admixed CA content. The start of the silicate reaction seems to be related to a decrease in Al- and increase in Ca-concentration in the pore solution. However, it can be shown in this study that C
S is able to dissolve even at high Al concentrations in the pore solution.

FAU-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

Götz-Neunhoeffer, Friedlinde Prof. Dr.
Lehrstuhl für Mineralogie
Jansen, Daniel Dr.
Graduiertenzentrum der FAU
Nehring, Jörg
Lehrstuhl für Mineralogie
Neubauer, Jürgen apl. Prof. Dr.
Naturwissenschaftliche Fakultät


Nehring, J., Jansen, D., Neubauer, J., & Götz-Neunhoeffer, F. (2019). Hydration of C3S in presence of CA: Mineral‐pore solution interaction. Journal of the American Ceramic Society, 102(6), 3152-3162. https://dx.doi.org/10.1111/jace.16197

Nehring, Jörg, et al. "Hydration of C3S in presence of CA: Mineral‐pore solution interaction." Journal of the American Ceramic Society 102.6 (2019): 3152-3162.


Zuletzt aktualisiert 2019-13-05 um 09:23