Strain measurement in concrete using embedded carbon roving-based sensors

Till Quadflieg; Thomas Gries; Oleg Stolyarov

doi:10.3139/120.110913

Article

Strain measurement in concrete using embedded carbon roving-based sensors

Till Quadflieg , Thomas Gries and Oleg Stolyarov

Published/Copyright: August 30, 2016

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From the journal Materials Testing Volume 58 Issue 9

Abstract

This paper presents the results of the application of carbon rovings as strain sensors for measuring the strain in concrete. In this work, three types of electrically conductive carbon roving with different characteristics were used. The possibility of using carbon rovings as a strain sensor is demonstrated via measurements in tensile and four point bending tests. The experimental setups and methods for measuring the electrical resistance of carbon roving in the roving and concrete are described. The results of the characterization of the electrical behavior as a function of strain of carbon rovings and concrete are presented and discussed. The obtained results indicate that the strain range of carbon rovings optimally corresponds to the strain range of concrete. This characteristic behavior makes the carbon rovings well suited for the use as strain sensors. A good correlation has been found between the electrical resistance-strain curve of the carbon roving and the measurements in the concrete.

Kurzfassung

Diese Veröffentlichung präsentiert die Ergebnisse der Verwendung von Kohlenstofffasern als Dehnungssensor zur Dehnungsmessung im Beton. In der Arbeit werden drei verschiedene Typen von elektrisch leitenden Kohlenstofffasern mit unterschiedlichen Eigenschaften untersucht. Die Möglichkeit Kohlenstofffasern als Dehnungssensor zu verwenden wird durch Messung in einem Vierpunkt-Biegeversuch demonstriert. Es wird die Messmethode und die Messkonfiguration zur Erfassung des elektrischen Widerstands der Kohlenstofffaser im Betonverbund beschrieben. Die Ergebnisse zur Charakterisierung des elektrischen Widerstandsverhaltens in Abhängigkeit von der Dehnung im Betonverbund werden präsentiert und diskutiert. Die daraus resultierenden Ergebnisse zeigen, dass der Messbereich der Dehnungsmessung mit Kohlenstofffasern gut mit der Dehnung im Betonverbund korrespondiert. Diese Eigenschaft macht Kohlenstofffasern attraktiv für die Verwendung als Dehnungssensor zur Strukturüberwachung in bewehrten Betonbauteilen. Die Ergebnisse verdeutlichen eine gute Korrelation zwischen den elektrisch-mechanischen Verhalten der Faser und der Messung im Betonverbund.

*Correspondence Address, Dipl.-Ing. Till Quadflieg, Composites Division, Institut fuer Textiltechnik (ITA) of RWTH Aachen University, Otto-Blumenthal-Strasse 1, 52074 Aachen, Germany, E-mail: till.quadflieg@ita.rwth-aachen.de

Dipl.-Ing. Till Quadflieg, born 1979, worked in the company Deutsche Telekom AG, Düsseldorf, Germany as a computer specialist for four years and afterwards graduated in Mechanical Engineering at RWTH Aachen University, Germany. Since 2010, he is part of the composites research team at the Institut für Textiltechnik (ITA) of RWTH Aachen University. His areas of expertise are smart textiles and textile–reinforced concrete.

Univ.-Prof. Prof. h.c. Dr.-Ing. Dipl.-Wirt. Ing. Thomas Gries, born 1964, studied Mechanical Engineering at RWTH Aachen University, Germany. He also finished his PhD in Mechanical Engineering at the same university and meanwhile he also graduated in Economics. He worked as a manager for textile machinery in the company Lurgi Zimmer AG, Frankfurt, Germany for six years. Since 2001, he is Professor for Textile Engineering and Director of the Institut für Textiltechnik (ITA) of RWTH Aachen University. He is coordinator of interdisciplinary research at RWTH Aachen University and reviewer and consultant. Since 2013, he is Honorary Professor of Lomonosov Moscow State University, Russia.

Dr. Oleg Stolyarov, born 1977, is Associate Professor at Peter the Great St. Petersburg Polytechnic University, Russia. In 2001, he graduated and completed his Doctorate degree at St. Petersburg State University of Technology and Design in 2005, specializing in technical textiles. His research interests include geosynthetics, textile preforming for composites, developing test methods, modeling and prediction of properties and investigation of structure property relations of technical textiles.

References

1 C. R.Cork: Electronic Textiles, Elsevier, Cambridge, UK (2015)Search in Google Scholar

2 C.Owston: Electrical properties of single carbon fibres, Journal of Physics D3 (1970), No. 11, pp. 1615–1626 DOI: 10.1088/0022-3727/3/11/309Search in Google Scholar

3 C. A.Berg, H.Cumpston, A.Rinsky: Piezoresistance of graphite fibers, Textile Research Journal42 (1972), No. 8, pp. 486–489 DOI: 10.1177/004051757204200810Search in Google Scholar

4 S.Błazewicz, B.Patalita, P.Touzain: Study of piezoresistance effect in carbon fibers, Carbon35 (1997), No. 10–11, pp. 1613–1618 DOI: 10.1016/S0008-6223(97)00120-6Search in Google Scholar

5 X.Wang, D.Chung: Electromechanical behavior of carbon fiber, Carbon35 (1997), No. 5, pp. 706–709 DOI: 10.1016/S0008-6223(97)86644-4Search in Google Scholar

6 J. K.Kim, C. S.Park, D. W.Lee, S. M.Cho, C. R.Han: Measurement of the gauge factor of carbon fiber and its application to sensors, Microelectronic Engineering85 (2008), No. 5–6, pp. 787–791 DOI: 10.1016/j.mee.2008.01.067Search in Google Scholar

7 P. W.Chen, D. D. L.Chung: Carbon fiber reinforced concrete as an electrical contact material for smart structures, Smart Materials and Structures2 (1993), No. 3, pp. 181–188 DOI: 10.1088/0964-1726/2/3/006Search in Google Scholar

8 P. W.Chen, D. D. L.Chung: Carbon fiber reinforced concrete for smart structures capable of non-destructive flaw detection, Smart Materials and Structures, 2 (1993), No. 1, pp. 22–30 DOI: 10.1088/0964-1726/2/1/004Search in Google Scholar

9 P. W.Chen, D. D. L.Chung: Carbon fiber-reinforced concrete as an intrinsically smart concrete for damage assessment during dynamic loading, Journal of the American Ceramic Society78 (1995), No. 3, pp. 816–818 DOI: 10.1111/j.1151-2916.1995.tb08254.xSearch in Google Scholar

10 M.Chiarello, R.Zinno: Electrical conductivity of self-monitoring CFRC, Cement and Concrete Composites27 (2005), No. 4, pp. 463–469 DOI: 10.1016/j.cemconcomp.2004.09.001Search in Google Scholar

11 D. D. L.Chung: Piezoresistive cement-based materials for strain sensing, Journal of Intelligent Material Systems and Structures13 (2002), No. 9, pp. 599–609 DOI: 10.1106/104538902031861Search in Google Scholar

12 D. D. L.Chung: Carbon materials for structural self-sensing, electromagnetic shielding and thermal interfacing, Carbon50 (2012), No. 9, pp. 3342–3353 DOI: 10.1016/j.carbon.2012.01.031Search in Google Scholar

13 F.Azhari, N.Banthia: Cement-based sensors with carbon fibers and carbon nanotubes for piezoresistive sensing, Cement and Concrete Composites34 (2012), No. 7, pp. 866–873 DOI: 10.1016/j.cemconcomp.2012.04.007Search in Google Scholar

14 Y.Goldfeld, O.Rabinovitch, B.Fishbain, T.Quadflieg, T.Gries: Sensory carbon fiber based textile-reinforced concrete for smart structures, Journal of Intelligent Material Systems and Structures27 (2016), No. 4, pp. 469–489 DOI: 10.1177/1045389X15571385Search in Google Scholar

15 Y.Goldfeld, S.Ben-Aarosh, O.Rabinovitch, T.Quadflieg, T.Gries: Integrated self-monitoring of carbon based textile reinforced concrete beams under repeated loading in the un-cracked region, Carbon98 (2016), No. 3, pp. 238–249 DOI: 10.1016/j.carbon.2015.10.056Search in Google Scholar

Published Online: 2016-08-30

Published in Print: 2016-09-07

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