Effect of Carbon-Based Materials on the Early Hydration of Tricalcium Silicate

Beitrag in einer Fachzeitschrift
(Originalarbeit)


Details zur Publikation

Autorinnen und Autoren: Sobolkina A, Mechtcherine V, Bergold S, Neubauer J, Bellmann C, Khavrus V, Oswald S, Leonhardt A, Reschetilowski W
Zeitschrift: Journal of the American Ceramic Society
Verlag: Blackwell Publishing Inc.
Jahr der Veröffentlichung: 2016
Band: 99
Heftnummer: 6
Seitenbereich: 2181-2196
ISSN: 1551-2916
Sprache: Englisch


Abstract


Two types of carbon-based materials, i.e., mesoporous carbon and HNO-oxidized carbon nanotubes, with nearly the same specific surface area and abundant in surface oxygen-containing functional groups were selected in order to examine their effect on the hydration of tricalcium silicate (CS), the main portland cement component, in early stages. Different methods, including XPS and TG-MS analyses, electrokinetic potential measurements, as well as determination of adsorption capacity for calcium ions from aqueous solutions, were used to investigate the physicochemical surface properties of the selected carbon-based materials. It was found that the carbon-based materials with high specific surface area and rich in oxygen-containing functional groups on their surfaces have a catalytic effect on early CS hydration. It was observed that the modification of CS paste with the selected materials added in high concentrations (1 wt% and higher) led to an increase in the rate and degree of CS hydration in the early stages. The mechanism of early CS hydration accelerated by carbon-based materials rich in surface functional groups was clarified by the example of the mesoporous carbon. It was found that the oxygen-containing functional groups present on the carbon surface have both an influence on the content of calcium ions in the aqueous phase of the CS paste and an indirect positive effect in relation to the specific surface of CS.



FAU-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

Bergold, Sebastian
Naturwissenschaftliche Fakultät
Neubauer, Jürgen apl. Prof. Dr.
Naturwissenschaftliche Fakultät


Einrichtungen weiterer Autorinnen und Autoren

Leibniz-Institut für Festkörper- und Werkstoffforschung Dresden e.V. (IFW) / Leibniz Institute for Solid State and Materials Research Dresden
Leibniz-Institut für Polymerforschung Dresden e. V.
Technische Universität Dresden


Zitierweisen

APA:
Sobolkina, A., Mechtcherine, V., Bergold, S., Neubauer, J., Bellmann, C., Khavrus, V.,... Reschetilowski, W. (2016). Effect of Carbon-Based Materials on the Early Hydration of Tricalcium Silicate. Journal of the American Ceramic Society, 99(6), 2181-2196. https://dx.doi.org/10.1111/jace.14187

MLA:
Sobolkina, Anastasia, et al. "Effect of Carbon-Based Materials on the Early Hydration of Tricalcium Silicate." Journal of the American Ceramic Society 99.6 (2016): 2181-2196.

BibTeX: 

Zuletzt aktualisiert 2019-22-07 um 07:23