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Accelerated Fresh Water Corrosion Study Remediation of Steel Structures

机译：钢结构的加速淡水腐蚀研究与修复

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摘要

Sheet pile and other steel structures installed in the Duluth, Minnesota and Superior, Wisconsin shared harbor are corroding at an accelerated rate compared to other Great Lakes harbors and ports. The harbor is located on Lake Superior and fed fresh water by the St. Louis and Nemadji Rivers. Originally discovered in 1998, the cause and potential solutions to the phenomenon have been investigated through a series of studies that carry on through today. An expert panel convened in 2004 to make an initial assessment of the extent and cause of the accelerated corrosion, as well as make recommendations for future testing necessary to identify and resolve the problem. Subsequent studies based on panel's recommendations have 1) determined the extent and rate of corrosion on steel structures in the Duluth / Superior Harbor (DSH) and established a long term corrosion rate monitoring program, 2) determined one possible cause directly influencing the accelerated corrosion through extensive biological testing, 3) established long term testing of coating and cathodic protection systems including the study of different coating's abilities to resist ice impact and abrasion experienced in cold region waters, 4) initiated long term full scale testing of alternative pile protective systems designed for cold regions, and 5) have shown that the accelerated corrosion is not only isolated to the DSH and has been found in other ports, harbors and small marinas within the confines of Lake Superior. Results from protection systems testing to date have identified several attractive coating and alternative protection systems that have showed to be resistant to ice impact and abrasion while preventing further corrosion of the steel structures. Future plans include the continued monitoring of existing long term tests as well as the initiation of further coating and alternative technology trials. Results of all trials will be published for utilization in the DSH and other cold region harbors.
机译：与其他大湖港口和港口相比，在明尼苏达州德卢斯和威斯康星州共享港安装的板桩和其他钢结构正在加速腐蚀。该港口位于苏必利尔湖上，由圣路易斯河和内马吉河提供淡水。最初于1998年发现，如今已通过一系列研究对这种现象的原因和潜在解决方案进行了研究。于2004年召集了一个专家小组，对加速腐蚀的程度和原因进行了初步评估，并为确定和解决问题所必需的未来测试提供了建议。随后根据专家组的建议进行了研究：1）确定了德卢斯/上港（DSH）钢结构的腐蚀程度和速率，并建立了长期腐蚀速率监控程序，2）确定了一种直接影响加速腐蚀的可能原因广泛的生物学测试，3）建立涂层和阴极保护系统的长期测试，包括研究不同涂层在寒冷地区水域中经受的抗冰冲击和磨蚀能力，4）启动了针对以下用途的替代桩保护系统的长期全面测试5）表明，加速腐蚀不仅与DSH隔离，而且在苏必利尔湖范围内的其他港口，港口和小型码头也发现了。迄今为止，防护系统测试的结果已经确定了几种有吸引力的涂层和替代防护系统，这些系统已显示出抗冰冲击和抗磨性，同时又防止了钢结构的进一步腐蚀。未来的计划包括继续监视现有的长期测试以及启动进一步的涂层和替代技术试验。所有试验的结果将公布，以在DSH和其他寒冷地区的港口中使用。

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  • 来源
    《》|2009年|P.627-636|共10页
  • 会议地点 Duluth MN(US)
  • 作者

    Chad W. Scott; Gene Clark; Joe Radniecki;

  • 作者单位

    P.A., 1 East 1st Street, Suite 403, Duluth, MN 55811;

    rnUniversity of Wisconsin Sea Grant Institute, Lake Superior Field Office University of Wisconsin-Superior, 153 Hawkes Hall, Superior, WI 54880-9985;

    rnP.A., 1 East 1st Street, Suite 403, Duluth, MN 55811;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 冰冻与严寒地区筑路;
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