Hydration of Portland cement with high replacement by siliceous fly ash

Journal article

Publication Details

Author(s): Deschner F, Winnefeld F, Lothenbach B, Seufert S, Schwesig P, Dittrich S, Götz-Neunhoeffer F, Neubauer J
Journal: Cement and Concrete Research
Publisher: Elsevier
Publication year: 2012
Journal issue: 42 (10)
Pages range: 1389-1400
ISSN: 0008-8846
Language: English


The effects of two different low calcium fly ashes on the hydration of ordinary Portland cement (OPC) pastes containing 50 wt.% of fly ash were investigated over a hydration time of 550 days. The results were compared with a reference blend of OPC containing 50 wt.% of inert quartz powder allowing the distinction between "filler effect" and pozzolanic reaction. Until 2 days, no evidence of fly ash reaction was measured and its influence on the hydration is mainly related to the filler effect. From 7 days on, the effects of the pozzolanic reaction were observed by the consumption of portlandite, the change of the pore solution chemistry, the formation of a presumably water-rich inner hydration product and the change of the C-S-H composition towards higher Al/Si ratio compared to the C-S-H of neat OPC. Additional strength due to the pozzolanic reaction developed after 28 days of hydration. © 2012 Elsevier Ltd.

FAU Authors / FAU Editors

Deschner, Florian
Naturwissenschaftliche Fakultät
Dittrich, Sebastian
Lehrstuhl für Mineralogie
Götz-Neunhoeffer, Friedlinde Prof. Dr.
Lehrstuhl für Mineralogie
Neubauer, Jürgen apl. Prof. Dr.
Lehrstuhl für Mineralogie

External institutions with authors

Eidgenössische Materialprüfungs- und Forschungsanstalt (Empa) / Swiss Federal Laboratories for Materials Science & Technology

How to cite

Deschner, F., Winnefeld, F., Lothenbach, B., Seufert, S., Schwesig, P., Dittrich, S.,... Neubauer, J. (2012). Hydration of Portland cement with high replacement by siliceous fly ash. Cement and Concrete Research, 42 (10), 1389-1400. https://dx.doi.org/10.1016/j.cemconres.2012.06.009

Deschner, Florian, et al. "Hydration of Portland cement with high replacement by siliceous fly ash." Cement and Concrete Research 42 (10) (2012): 1389-1400.


Last updated on 2018-07-08 at 04:08