Journal article
Effectiveness of Products in Managing Metallic Corrosion Induced by Cyclic Deicer Exposure: Laboratory Study Using Multielectrode Array Sensors, Electrochemical Impedance, and Laser Profilometer
Journal of materials in civil engineering, Vol.28(5), p.4015186
05/01/2016
Handle:
https://hdl.handle.net/2376/120941
Abstract
AbstractA total of 12 multielectrode array sensors were utilized to assess the individual effectiveness of two corrosion inhibitors and one coating under cyclic deicer exposure conditions. There were four sensor groups, and each group consisted of nine-pin probes that were fabricated from 1008 carbon steel, 304 stainless steel, and 1100 aluminum, respectively. A total of two environmental exposure tests were conducted, in which 2.3% NaCl and 3.0% MgCl2 solutions were used as salt, respectively. The two tests each included eight environmental cycles and with 24 h per cycle. For all the exposed sensors, the most severe corrosion occurred at the beginning of the humidity stage. For sensors in the control group, MgCl2 exhibited a corrosion attack throughout the exposure period, whereas NaCl only exhibited an apparent corrosion attack during the humidity stage. Both the sensor corrosion rates and mass loss results indicate that the inhibitors had a much greater effect for MgCl2 than for NaCl. Although the coating showed significant benefits in protecting the metallic substrates, the cyclic exposure to MgCl2 led to greater coating deterioration than did NaCl. For validation, impedance measurements were conducted on carbon steel panels subjected to similar exposures, and three-dimensional laser profilometer scans were performed to characterize their surface morphology after the exposures.
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Details
- Title
- Effectiveness of Products in Managing Metallic Corrosion Induced by Cyclic Deicer Exposure: Laboratory Study Using Multielectrode Array Sensors, Electrochemical Impedance, and Laser Profilometer
- Creators
- Jianlin Wu - Wuhan Polytechnic Univ. Associate Professor, , School of Civil Engineering and Architecture, Wuhan, Hubei 430023, . E-mailHui Yu - Wood Group Mustang, Inc. Research Engineer, , 16001 Park 10 Place, Houston, TX 77084. E-mailXianming Shi - Washington State Univ. Associate Professor, Laboratory of Advanced and Sustainable Cementitious Materials, Dept. of Civil and Environmental Engineering, , Sloan 101, P.O. Box 642910, Pullman, WA 99164-2910 (corresponding author). E-mail
- Publication Details
- Journal of materials in civil engineering, Vol.28(5), p.4015186
- Academic Unit
- Civil and Environmental Engineering, Department of
- Publisher
- American Society of Civil Engineers
- Identifiers
- 99900612705001842
- Language
- English
- Resource Type
- Journal article