Please use this identifier to cite or link to this item: https://hdl.handle.net/11681/36373
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dc.contributor.authorHodgdon, Taylor S.-
dc.contributor.authorShoop, Sally A. (Sally Annette)-
dc.date.accessioned2020-04-28T13:44:19Z-
dc.date.available2020-04-28T13:44:19Z-
dc.date.issued2019-11-
dc.identifier.govdocERDC/CRREL TR-19-23-
dc.identifier.urihttps://hdl.handle.net/11681/36373-
dc.identifier.urihttp://dx.doi.org/10.21079/11681/36373-
dc.descriptionTechnical Report-
dc.description.abstractAccurate terrain characterization is important for predicting off-road vehicle mobility. Soil strength is a significant terrain characteristic affecting vehicle mobility. Collecting soil strength measurements is laborious, making in-situ observations sparse. Research has focused on providing soil strength estimates using remote sensing techniques that can provide large spatial and temporal estimates, but the results are often inaccurate. Past attempts have quantified the soil properties of arid environments using landform assessments; yet many military operating environments occupy high latitude regions with landscapes dominated by glacial deposits. This study took preliminary strength measurements for glacial landforms deposited from the Laurentide Ice Sheet in New England. A range of common glacial landforms were sampled to assess shear strength, bearing capacity, and volumetric moisture content. Glacial outwash landforms had the highest average shear strengths, glacial deltas the lowest. There was a significant negative correlation between silt content and shear strength of the soil, a significant positive correlation between bearing capacity and clay content, and a significant negative correlation with sand content. Moisture content of soils was inversely correlated to the abundance of gravel in the deposit. This work provides initial insight to this approach on glaciated terrain, but continued sampling will provide more robust correlations.en_US
dc.description.sponsorshipUnited States. Army. Corps of Engineers.en_US
dc.description.tableofcontentsAbstract .......................................................................................................................................................... ii Figures and Tables ........................................................................................................................................ iv Preface ............................................................................................................................................................. v 1 Introduction ............................................................................................................................................ 1 1.1 Background ..................................................................................................................... 1 1.2 Glacial soils ..................................................................................................................... 2 1.3 Objective .......................................................................................................................... 4 1.4 Approach ......................................................................................................................... 4 2 Methodology .......................................................................................................................................... 5 2.1 Sampling locations ......................................................................................................... 5 2.2 Landform soil measurements ........................................................................................ 7 2.2.1 Shear vane ........................................................................................................................... 9 2.2.2 Clegg impact hammer ......................................................................................................... 9 2.2.3 Field Scout volumetric moisture content ......................................................................... 10 3 Results and Discussion ...................................................................................................................... 11 3.1 Soil strength and moisture variations with landform .................................................. 11 3.2 Landform soil texture relation to strength properties ................................................. 14 4 Conclusions and Future Work .......................................................................................................... 17 References ................................................................................................................................................... 19 Acronyms and Abbreviations .................................................................................................................... 22 Unit Conversion Factors ............................................................................................................................ 23 Report Documentation Page (SF 298) ................................................................................................... 24-
dc.format.extent32 pages / 2.68 MB-
dc.format.mediumPDF-
dc.language.isoen_USen_US
dc.publisherCold Regions Research and Engineering Laboratory (U.S.)en_US
dc.publisherEngineer Research and Development Center (U.S.)-
dc.relation.ispartofseriesTechnical Report (Engineer Research and Development Center (U.S.)) ; no. ERDC/CRREL TR-19-23-
dc.rightsApproved for Public Release; Distribution is Unlimited-
dc.sourceThis Digital Resource was created in Microsoft Word and Adobe Acrobat-
dc.subjectGlacial landformsen_US
dc.subjectNew Hampshireen_US
dc.subjectShear strength of soilsen_US
dc.subjectSoil mechanicsen_US
dc.subjectTrafficabilityen_US
dc.titlePreliminary assessment of landform soil strength on glaciated terrain in New Hampshireen_US
dc.typeReporten_US
Appears in Collections:Technical Report

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