1. ERDC Knowledge Core
  2. Federally Sponsored Research Programs Reports
  3. Dredging Operations Technical Support Program (DOTS)
  4. Publication
  5. Technical Report
Please use this identifier to cite or link to this item: https://hdl.handle.net/11681/4634
Full metadata record
DC FieldValueLanguage
dc.contributor.authorPizzuto, James E.en_US
dc.contributor.authorPoindexter-Rollings, Marian E.en_US
dc.creatorUniversity of Delaware. Department of Geologyen_US
dc.creatorDredging Operations Technical Support Program (U.S.)en_US
dc.creatorEnvironmental Laboratory (U.S.)en_US
dc.date.accessioned2016-03-16T22:17:49Zen_US
dc.date.available2016-03-16T22:17:49Zen_US
dc.date.issued1990-02en_US
dc.identifier.govdocTechnical Report D-90-4en_US
dc.identifier.urihttp://hdl.handle.net/11681/4634en_US
dc.descriptionTechnical Reporten_US
dc.description.abstractA computer model, Primary Consolidation and Desiccation of Dredged Fill (PCDDF), has been developed to predict the settlement of dredged material placed in confined disposal sites. PCDDF, a model that calculates both consolidation settlement and desiccation settlement, uses a well established theory to predict consolidation and employs an empirical formulation to predict desiccation. At present, no field or laboratory procedures exist for determining values for the empirical desiccation parameters. This study established procedures for quantifying these parameters through a field evaluation program in the US Army Engineer District, Philadelphia. A water budget approach was used to calculate desiccation parameters for the dried crust of the desiccating dredged material at the Wilmington Harbor Containment Area near Wilmington, DE. The evaporation efficiency was found to be a constant value of 0.72, the drainage efficiency was 0.21, the saturation limit was 3.02, the desiccation limit was 2.69, the depth of second-stage drying was 0.20 m, and the percent saturation of the desiccated crust (including cracks) was 0.74. The long-term water budget for the desiccated crust for the entire duration of the study clearly indicates that second-stage drying was largely completed when the study began. Because the study was initiated approximately 1 month after the dredged material was placed, these results suggest that both first- and second-stage drying are completed very rapidly at the Wilmington Harbor Containment Area. The procedures utilized in the study at the Wilmington Harbor containment area can be employed at other dredged material disposal sites to determine quantitative values for the empirical desiccation parameters.en_US
dc.description.sponsorshipDredging Operations Technical Support Program (U.S.)en_US
dc.description.sponsorshipUnited States. Army. Corps of Engineersen_US
dc.description.tableofcontentsPreface......................1 List of Tables......................2 List of Figures......................2 Conversion Factors, Non-SI to SI (Metric) Units of Measurement......................4 Part I: Introduction......................5 Background......................5 Purpose......................5 Scope......................6 Part II: Hydrologic Evaluation Procedures......................7 The Desiccation Model......................7 Water Budget for the Desiccated Crust......................9 Desiccation Settlement......................10 Previously Collected Field Data......................11 Previous Guidance on Determining Values......................12 Summary......................13 Part III: Field Site Conditions......................14 Site Description......................14 Operation During the Study......................15 Part IV: Methods......................18 Evaporation Efficiency......................18 Drainage Efficiency......................19 Rainfall and Class A Pan Evaporation......................19 Overland Flow......................20 Moisture Content and Void Ratio......................20 Water Supplied from Below the Crust......................23 Measuring the Percent Saturation of the Dried Crust......................24 Measuring the Depth to the Water Table......................26 Part V: Results......................27 Climatic Conditions During the Study......................27 Moisture Content, Void Ratios, and Crust Thickness......................32 Percent Saturation of the Desiccated Crust......................37 Part VI: Discussion and Interpretation......................40 Part VII: Conclusions and Recommendations......................45 Conclusions......................45 Recommendations......................46 References......................48 Appendix A: Notation......................49en_US
dc.format.extent53 pages/8.45 MBen_US
dc.format.mediumPDFen_US
dc.language.isoen_USen_US
dc.publisherU.S. Army Engineer Waterways Experiment Stationen_US
dc.relationhttp://acwc.sdp.sirsi.net/client/en_US/search/asset/1036383en_US
dc.relation.ispartofseriesTechnical Report (Dredging Operations Technical Support Program (U.S.)) ; no.Technical Report D-90-4en_US
dc.rightsApproved for public release; distribution is unlimiteden_US
dc.sourceThis Digital Resource was created from scans of the Print Resourceen_US
dc.subjectDredged materialen_US
dc.subjectHydrologyen_US
dc.subjectDisposalen_US
dc.subjectDewateringen_US
dc.subjectParametersen_US
dc.subjectDesiccationen_US
dc.subjectSoft soilen_US
dc.subjectDredging spoilen_US
dc.subjectComputer programsen_US
dc.subjectPrimary Consolidation and Desiccation of Dredged Fill (PCDDF)en_US
dc.subjectWilmington (Del.)en_US
dc.subjectDredging Operations Technical Support Program (U.S.)en_US
dc.titleMeasurement of hydrologic parameters of confined dredged material at Wilmingaton Harbor, Delaware, containment areaen_US
dc.typeReporten_US
Appears in Collections:Technical Report

Files in This Item:
File Description SizeFormat 
TR-D-90-4.pdfTechnical Report D-90-48.45 MBAdobe PDFThumbnail
View/Open
Show simple item record