Beneficial use of dredged materials in Great Lakes commercial ports for transportation projects.
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Beneficial use of dredged materials in Great Lakes commercial ports for transportation projects.

Filetype[PDF-1.91 MB]

  • English

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    • Abstract:
      This report describes an effort to facilitate beneficial use of dredged materials (DM) from Great Lakes ports and harbors as an alternative construction

      material in transportation-related earthwork applications. The overall objective is to link together the following components: 1) identify applications

      for use of DM in transportation-related projects, 2) summarize required geotechnical properties in specific transportation applications, 3) identify

      available geotechnical test methods to determine those properties, 4) identify specific values of required geotechnical material properties for specific

      uses, and 5) identify locations within the Great Lakes region where dredged materials meeting these specifications may be sourced. This report pulls

      together available information on potential applications for the use of DM in transportation earthwork projects, the required geotechnical properties of

      materials according to federal and state construction specifications, and the geotechnical laboratory and field test methods available to determine

      these properties. Representative geotechnical properties of DM from select Great Lakes locations are synthesized from available literature and the

      results of laboratory tests conducted on DM sampled from the Milwaukee confined disposal facility (CDF). Results are evaluated within the

      framework developed above to assess the suitability of unamended DM from each location for beneficial use in transportation construction. Based on

      the information obtained, material potentially sourced from these locations has limited direct use in its raw or unamended form. Review of general

      sediment types in harbors throughout the region, however, indicates that there may be large potential for beneficial use of DM because the sediment

      type from numerous harbors in the region is predominantly coarse-grained. Fine-grained materials are also a potential source of material if amended or

      stabilized with other materials (e.g., fly ash). Future effort should focus on laboratory evaluation of stabilized fine-grained DM, detailed field

      characterization of the physical properties at DM sources throughout the region, and dissemination and outreach to promote the concept of beneficial

      use of dredged materials in transportation construction.

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