Impact of Masonry Joints on Detection of Humidity Distribution in Aerated Concrete Masonry Constructions by Electric Impedance Spectrometry Measurements
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Impact of Masonry Joints on Detection of Humidity Distribution in Aerated Concrete Masonry Constructions by Electric Impedance Spectrometry Measurements

Authors: Sanita Rubene, Martins Vilnitis, Juris Noviks

Abstract:

Aerated concrete is a load bearing construction material, which has high heat insulation parameters. Walls can be erected from aerated concrete masonry constructions and in perfect circumstances additional heat insulation is not required. The most common problem in aerated concrete heat insulation properties is the humidity distribution throughout the cross section of the masonry elements as well as proper and conducted drying process of the aerated concrete construction because only dry aerated concrete masonry constructions can reach high heat insulation parameters. In order to monitor drying process of the masonry and detect humidity distribution throughout the cross section of aerated concrete masonry construction application of electrical impedance spectrometry is applied. Further test results and methodology of this non-destructive testing method is described in this paper.

Keywords: Aerated concrete, electrical impedance spectrometry, humidity distribution, non-destructive testing.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1337761

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References:


[1] http://aeroc.lv/index.php?page=938&lang=lat&cnt=AEROC_Universal (site accessed on June 30, 2014).
[2] Parilkova, J. The EIS Method and a Z-meter III Device, a lecture within an event in Litice.
[3] Parilkova, J., Pavlik, J. An automated system for analysis of selected characteristics and processes in a porous environment using the EIS method. A partial report of the Project OE10002 for the year 2010 externally examined, Brno (2010);
[4] Kunzel H. M et al. Simultaneus heat and moisture transport in building components. Fraunhofer Institute of Building Physics. 1995;
[5] McCarter, W.J. ; Garvin, S. Dependence of Electrical Impedance of Cement-Based Materials on their Moisture Condition. In: Journal of Applied Physics Series D: Applied Physics 22 (1989), No. 11, S. 1773- 1776.
[6] 12. Elsener, B. Ion Migration and Electric Conductivity in Concrete. Zürich: SchweizerischerIngenieur- und Architekten-Verein, 1990. - In: Korrosion und Korrosionsschutz. Tl 5. Electrochemical Protection Process for Concrete Building Structures, Symposium 15. November 1990, S. 51-59.
[7] Skramlik, J., Novotny, M.. One-dimensional moisture transport monitored by a non-destructive method. International Journal of Computers Issue 4, Volume 2, 2008.
[8] Parilkova, J. et al. Monitoring of changes in moisture content of the masonry due to microwave radiation using the EIS method. Eureka 2011, ISBN 978-80-214-4325-9, Brno (2011).
[9] Rubene S. et al. Determination of Humidity Level in Aerated Concrete Constructions by Non Destructive Testing Methods, in Proc “Innovative Materials, Structures and Technologies” Riga, 2014 p.135-140.
[10] DeAngelis, K. M. "Measurement of soil moisture content by gravimetric method." American Society of Agronomy: 1-2, 2007.
[11] Jana Selih, A. S. "Moisture transport in initially fully saturated concrete during drying." Transport in Porous Media 24, 1996 p. 81-106.
[12] Akita, H., Fujiwara, T. and Ozaka, Y.." A practical procedure for the analysis of moisture transfer within concrete due to drying." Magazine of Concrete Research 48 (6), 1996, p.129-137.
[13] G.Quincot, M.Azenha, J. Barros, R.Faria. “ State of the art – Methods to measure moisture in concrete” Projetos De Investigação Científica E Desenvolvimento Tecnológico, Portugal, 2011.
[14] Villain, G. and M. Thiery. "Gammadensimetry: A method to determine drying and carbonation profiles in concrete." NDT & E International 39(4), 2006. p.328-337.
[15] S. Multon, E. M. "Water distribution in beams damaged by alkali-silica reaction: global weighing and local gammadensitometry." Materials and Structures Vol. 37, 2004.
[16] Physics, C. "Relative humidity sensors" 2010: 1-3.
[17] Zachary Grasley, D. A. L. "Relative humidity in concrete." ACI Committee 236, 2006. p.51-57.
[18] Wiederhold, P. R. "Water vapor measurement, methods, and instrumentation." Marcel Dekker, Inc. New York, 1997. p. 384.
[19] Rubene S., Vilnitis M. Application of Electrical Impedance Spectrometry for Determination of Moisture Distribution in Aerated Concrete Constructions in Proc. “1st Conference and Working Session Eureka! 7614” Brno, Czech Republic, 2013. p. 124-130.
[20] Rubene, S., Vilnītis, M., Noviks, J. Monitoring of the Aerated Concrete Construction Drying Process by Electrical Impedance Spectrometry. In: Proceedings of 4th International Conference "Advanced Construction 2014", Lithuania, Kaunas, 9-10 October, 2014. Kaunas: Kaunas University of Technology, 2014, pp.216-220. ISSN 2029-1213.