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Project Leader
Taijiro Sato
Phone: 613-993-0089
Fax: 613-954-5984
Email: Taijiro.Sato@nrc-cnrc.gc.ca
Application of AC Impedance Spectroscopy Technique for Cement-Based Materials and Concrete
Objectives
To apply an alternative current impedance spectroscopy (ACIS) technique for analyzing the micro- and nano-scale properties of cement-based materials and concrete.
Background
The ACIS technique has been applied in studying micro-scale properties of cement paste. It is gaining wider application owing to its advantages e.g. rapid data acquisition, continuous measurement and the attractiveness of a non-destructive testing process. The ACIS technique involves the measurement of an electrical signal resulting from an applied perturbation. The responses in electrical signal that the ACIS monitors are of particular interest and value in understanding the micro-scale structures of cement paste. However, the interpretation of the ACIS results and the nature of the ACIS technique used to study the properties of cement paste under various conditions are not universally accepted and not fully understood.
Statement of Work
This project investigates the efficacy of use of ACIS technique for investigating the conditions and understanding the properties of cement-based materials and concrete. The results obtained by the ACIS technique will be analyzed in detail and compared with the results of other analytical techniques.
This project will provide a better understanding of the properties of cement-based materials using the ACIS technique. The outcome of this project has the potential to apply this technique in the field as a non-destructive technique to monitor and diagnose the conditions of concrete structures.
Start Date
This project started in January 2009 and was completed in March 2010.
Publications
Coupled AC impedance and thermo-mechanical analysis of freezing
phenomena in cement paste
Sato, T. Beaudoin, J.J.
Materials and Structures, 43
pp. 1-10. 2010-10-01
[Full citation /
Référence complète]
