English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/47245
Share/Impact:
Statistics
logo share SHARE   Add this article to your Mendeley library MendeleyBASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:
Title

Impedance measurements on cement paste

AuthorsKeddam, M.; Takenouti, H.; Nóvoa, X. R.; Andrade, C.; Alonso, C.
KeywordsHigh frequency region
Impedance spectrum
Issue Date1997
PublisherElsevier
CitationCement and Concrete Research; Vol. 27; nº 8; págs. 1191-1201;(1997)
AbstractThe present paper is devoted to the study of the high frequency region of the impedance spectrum, and focused at determining the origin of the time constants in the impedance and their relation to the dielectric properties of cement paste. The origin of the intermediate frequency capacitive range was investigated by intercalating polyester sheets between the paste sample and the graphite electrodes. It was concluded that the dielectric constant of cement paste can be determined only when impedance measurements are performed to frequencies higher than 10 MHz. Oven dried cement paste presents a single almost perfect capacitive behaviour with a dielectric constant, ε, below 10. In partially moistened cement paste the higher frequency range gives a reasonable ε (≈80) for awater containing material. It is concluded that the interpretation of the high values of ε in terms of the DAF effect does not seem correct.
Publisher version (URL)http://www.sciencedirect.com/science/article/pii/S0008884697001178
URIhttp://hdl.handle.net/10261/47245
ISSN0008-8846
Appears in Collections:(CISDEM) Artículos
Files in This Item:
There are no files associated with this item.
Show full item record
Review this work
 


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.