United States Department of Transportation
i
Sustainably Enhancing Intermodal Freight Operation of Ports Using Geotextile Tubes
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2015-10-01
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[PDF-3.04 MB]
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Abstract:The primary objective of this report was to study use of geotextile tubes filled with cementitiously stabilized very high moisture content fine grained dredged soils for beneficial reuse. The purpose of doing so was to sustainably enhance intermodal freight operation of ports. A material of key emphasis in this report was lightly cemented very high moisture content fine grained soil (LC-VHMS), which by definition in this report contained 5% or less cement by slurry mass (soil plus water). A cement of key interest in this study was portland-limestone cement (PLC), which is a more sustainable alternative to ordinary portland cement. The project’s research and educational plan had four components summarized as follows: 1) evaluate engineering properties of geotextile tubes filled with LC-VHMS; 2) develop methodologies to help ports include geotextile tubes more readily; 3) study sustainability and economic competitiveness of LC-VHMS filled geotextile tubes; 4) educate students and the engineering community on the potential benefits of LC-VHMS filled geotextile tubes. The overall conclusion of this report is that LC-VHMS should be considered as geotextile tube fill for some applications and LC-VHMS could have some value absent geotextile tubes in other applications in and around ports and harbors. Engineering With Nature (EWN) applications could make use of lightly cemented materials as they have the potential to improve properties to levels suitable for low strength applications.
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