Non-Destructive Study of the Microstructural Effects of Sodium and Magnesium Sulphate Attack on Mortars Containing Silica Fume Using Impedance Spectroscopy
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Title: | Non-Destructive Study of the Microstructural Effects of Sodium and Magnesium Sulphate Attack on Mortars Containing Silica Fume Using Impedance Spectroscopy |
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Authors: | Williams, Mark | Ortega, José Marcos | Sánchez, Isidro | Cabeza, Marta | Climent, Miguel-Ángel |
Research Group/s: | Durabilidad de Materiales y Construcciones en Ingeniería y Arquitectura |
Center, Department or Service: | Universidad de Alicante. Departamento de Ingeniería Civil |
Keywords: | Impedance spectroscopy | Sulphate attack | Microstructure | Silica fume | Magnesium |
Knowledge Area: | Ingeniería de la Construcción |
Issue Date: | 23-Jun-2017 |
Publisher: | MDPI |
Citation: | Williams M, Ortega JM, Sánchez I, Cabeza M, Climent MÁ. Non-Destructive Study of the Microstructural Effects of Sodium and Magnesium Sulphate Attack on Mortars Containing Silica Fume Using Impedance Spectroscopy. Applied Sciences. 2017; 7(7):648. doi:10.3390/app7070648 |
Abstract: | The microstructural effects of exposure to a 15% magnesium sulphate, 15% sodium sulphate, and mixed solutions were observed in mortars with and without silica fume, using the non-destructive impedance spectroscopy technique. The non-destructive “Wenner” resistivity test and the classical mercury intrusion porosimetry were used as contrast techniques. The compressive strength of the mortars was also studied. In view of the results obtained, impedance spectroscopy was the most sensitive technique for detecting changes in the porous network of the studied mortars. The addition of silica fume results in a more refined microstructure and a higher compressive strength in mortars exposed to aggressive sulphate solutions. |
Sponsor: | The research work included in the paper has been financially supported by the “Ministerio de Economía y Competitividad” (formerly “Ministerio de Ciencia e Innovación”) of Spain and FEDER through projects BIA2010-20548 and BIA2011-25721, and by the University of Alicante through project GRE13-25. |
URI: | http://hdl.handle.net/10045/67536 |
ISSN: | 2076-3417 |
DOI: | 10.3390/app7070648 |
Language: | eng |
Type: | info:eu-repo/semantics/article |
Rights: | © 2017 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
Peer Review: | si |
Publisher version: | http://dx.doi.org/10.3390/app7070648 |
Appears in Collections: | INV - DMCIA - Artículos de Revistas |
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2017_Williams_etal_ApplSci.pdf | 3,72 MB | Adobe PDF | Open Preview | |
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