English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/75021
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

Understanding cementitious materials in fresh state: A nano-scale study on the effect of the mixing time

AuthorsCastillo, Andrea P.; Martínez Sierra, Isabel; Rozas, F.; Castellote, M.
KeywordsCementitious materials
Fresh state
Mixing regime
Zeta potential
Electrochemical impedance spectroscopy
Issue Date2012
CitationJournal of Alloys and Compounds 536S : S569-S574 (2012)
AbstractThe appropriate mix of cement, water, sand and aggregates produces the material called concrete, which results to be much more complex than it seems at first sight. In the last decade, the chapter concerning special uses of concrete has gained much more relevance being the nowadays challenge to produce tailored concretes for special uses. When mixing a cementitious material, it behaves like a fluid, having a transition phase until it becomes a solid. A good approximation to the rheology of the concrete in this phase is represented by the Binghan model of fluid mechanics, being this period very influenced by the different chemical admixtures and additions used to be able to manage the mix. An understanding of how individual colloids interact with each other is crucial as long as agglomeration, segregation or right dispersion of the mixes is concerned. In this paper, for different binders and PCE and SNF superplasticizers, adsorption, micro-electroforetic, electroosmotic and electrochemical impedance spectroscopy measurements have been carried out on the plain binders and on fresh state cement pastes both mixed during the standard regime and during longer time, and the results have been compared and critically analyzed with the traditional characterization techniques for fresh state concrete, deriving important practical consequences not only for the handling of the fresh material but also for their hardened properties.
Publisher version (URL)http://dx.doi.org/10.1016/j.jallcom.2011.12.106
Appears in Collections:(CISDEM) Artículos
Files in This Item:
There are no files associated with this item.
Show full item record
Review this work

Related articles:

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