Nehring J, Jansen D, Neubauer J, Götz-Neunhoeffer F (2018)
Publication Language: English
Publication Status: Published
Publication Type: Journal article, Original article
Publication year: 2018
Publisher: Blackwell Publishing Inc.
Book Volume: 102
Pages Range: 3152-3162
Journal Issue: 6
DOI: 10.1111/jace.16197
C 3 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 3 S hydration, representing an under sulfated OPC-rich binder, and to shed light on the underlying hydration mechanisms. To this end, C 3 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 3 S and precipitation of C–S–H with or without CH) can be retarded for 4 to ≥22 hours in comparison to pure C 3 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 3 S is able to dissolve even at high Al concentrations in the pore solution.
APA:
Nehring, J., Jansen, D., Neubauer, J., & Götz-Neunhoeffer, F. (2018). 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
MLA:
Nehring, Jörg, et al. "Hydration of C3S in presence of CA: Mineral-pore solution interaction." Journal of the American Ceramic Society 102.6 (2018): 3152-3162.
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