Substrate Modification and Magnetic Water Treatment on the Maintenance of Tunnel Drainage Systems. II: Field Tests
Publication: Journal of Performance of Constructed Facilities
Volume 29, Issue 3
Abstract
As a result of previous laboratory tests suggesting an effect of magnetic fields on the deposition of calcium carbonate, tunnel operators in Seoul, South Korea, assigned three tunnel sites, Namsan #3 tunnel and subway tunnel segments near stations 750 and 542, to evaluate the effectiveness of magnetic fields in inhibiting calcium carbonate deposition. Field tests conducted over several months revealed no significant effect from the use of magnets. Observations from one site suggested the use of magnets to be a clogging hazard, as iron compounds would assemble around the magnet. From these results, the application of magnetic fields to inhibit calcium carbonate deposition in tunnel drainage systems is not recommended.
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Acknowledgments
This work was financially supported by the Seoul R&BD Program (No. ST100052). Special thanks go to Jonghwi Lee, Ikchan Ju, Jungwu Nam, Eunhyeong Park, and Saehwan Yun for their help in conducting experiments and communications.
References
Yee, E., Jang, Y. S., and Chun, B. S. (2015). “Substrate modification and magnetic water treatment on the maintenance of tunnel drainage systems. Part I: Feasibility tests.” J. Perf. Constr. Facil., 04014076.
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Published In
Journal of Performance of Constructed Facilities
Volume 29 • Issue 3 • June 2015
Copyright
© 2014 American Society of Civil Engineers.
History
Received: Dec 5, 2013
Accepted: Jan 6, 2014
Published online: Aug 12, 2014
Discussion open until: Jan 12, 2015
Published in print: Jun 1, 2015
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