Interaction of silicate and aluminate reaction in a synthetic cement system: Implications for the process of alite hydration

Beitrag in einer Fachzeitschrift
(Originalarbeit)


Details zur Publikation

Autor(en): Bergold ST, Götz-Neunhoeffer F, Neubauer J
Zeitschrift: Cement and Concrete Research
Jahr der Veröffentlichung: 2017
Band: 93
Heftnummer: 1
Seitenbereich: 32-44
ISSN: 0008-8846
Sprache: Englisch


Abstract


Synthetic cement with different sulfate additions is investigated by means of heat flow calorimetry and quantitative in-situ XRD. This study especially analyses different sulfate additions between a typical undersulfated and a properly sulfated white Portland cement. A series of sulfate additions was monitored, and the interference of aluminate and silicate reaction was observed. This interference has never received closer examination before. It is shown that while interference occurs at different times during hydration, the reaction turnover of all synthetic cements is the same after 48 h. The results indicate that negative effects on silicate hydration are likely due to the precipitation of AFm phases and not an Al-inhibition process. The accelerating effect of sulfate on alite hydration is most likely caused by a seeding effect of the very fine ettringite that has just precipitated, resulting in more substrate surface for C-S-H precipitation in comparison to pure alite paste. © 2017 Elsevier Ltd



FAU-Autoren / FAU-Herausgeber

Bergold, Sebastian Tobias
Lehrstuhl für Mineralogie
Götz-Neunhoeffer, Friedlinde Prof. Dr.
Naturwissenschaftliche Fakultät
Neubauer, Jürgen apl. Prof. Dr.
Naturwissenschaftliche Fakultät


Zitierweisen

APA:
Bergold, S.T., Götz-Neunhoeffer, F., & Neubauer, J. (2017). Interaction of silicate and aluminate reaction in a synthetic cement system: Implications for the process of alite hydration. Cement and Concrete Research, 93(1), 32-44. https://dx.doi.org/10.1016/j.cemconres.2016.12.006

MLA:
Bergold, Sebastian Tobias, Friedlinde Götz-Neunhoeffer, and Jürgen Neubauer. "Interaction of silicate and aluminate reaction in a synthetic cement system: Implications for the process of alite hydration." Cement and Concrete Research 93.1 (2017): 32-44.

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Zuletzt aktualisiert 2018-01-10 um 21:50