Distribution of the Stray Current of Rebar in the Ballast Bed

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Corresponding prevention strategies can be put forward by learning the stray current distribution in the metro rebar. In the paper, the stray current intensity of the rebar in the ballast of the power supply area and the 24-hour polarization potential of the rebar in the ballast are obtained through the test of vertical resistance, track-current drainage net resistance and track-earth resistance, and the polarization potential test in the tunnel ballast of metro system in service. The daily leak of the stray current of the rebar in the ballast is also obtained based on the relationship between the polarization potential and current intensity. The test result shows that the vertical resistance of the track has quite good consistency while the track-current drainage net resistance and track-earth resistance have relatively great discreteness. The polarization potential peak of the rebar in the ballast is over 500mV and the 24-hour equivalent and average current intensity of the rebar in the ballast can rise up to 0.26~0.43A/dm2.

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Edited by:

Chunliang Zhang and Paul P. Lin

Pages:

2147-2153

Citation:

Z. J. Dong et al., "Distribution of the Stray Current of Rebar in the Ballast Bed", Applied Mechanics and Materials, Vols. 226-228, pp. 2147-2153, 2012

Online since:

November 2012

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$38.00

[1] K. Zakowski, W. Sokolski. 24-hour characteristic of interaction on pipelines of stray currents leaking from tram tractions. Corrosion Science. 49(1999). 2099-2111.

DOI: https://doi.org/10.1016/s0010-938x(99)00034-7

[2] K. Darowicki, K. Zakowski. A new time–frequency detection method of stray current field interference on metal structures. Corrosion Science. 46 (2004) 1061–1070.

DOI: https://doi.org/10.1016/j.corsci.2003.09.007

[3] S. Nikolakakos. Stray currents generation, interference effects and control. Nace Corrosion. 98(1998) 559-565.

[4] SeonYeob Li, Young-Geun Kim, Sungwon Jung, Hong-Seok Song, Seong-Min Lee. Application of steel thin film electrical resistance sensor for in situ corrosion monitoring. Sensors and Actuators B 120 (2007) 368–377.

DOI: https://doi.org/10.1016/j.snb.2006.02.029

[5] R. Cigna, L. Giuliani, G. Gusmano, Continuous corrosion monitoring in desalination plants, Desalination 55 (1985) 219–227.

DOI: https://doi.org/10.1016/0011-9164(85)80074-6

[6] Y.G. Kim, S.W. Jung, H.S. Song, S. -M. Lee, Y.T. Kho, Corrosion rate measurement technique with thin film electrical resistance sensor, Corrosion Science Technology. 31 (2002) 315–319.

[7] F. Brichau, J. Deconinck, T. Driesens, Modeling of underground catholic protection stray current, Corrosion 52 (1996) 480–488.

DOI: https://doi.org/10.5006/1.3292137

[8] K.W. Park, Y.B. Cho, K.S. Jeon, S. -M. Lee, Y.T. Kho, Evaluation of stray current effect on the catholic protection of underground pipeline, in: Proceedings of the 1st International Pipeline Conference, Book No. H1048A, ASME, New York, (1996).