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https://hdl.handle.net/11681/36373
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DC Field | Value | Language |
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dc.contributor.author | Hodgdon, Taylor S. | - |
dc.contributor.author | Shoop, Sally A. (Sally Annette) | - |
dc.date.accessioned | 2020-04-28T13:44:19Z | - |
dc.date.available | 2020-04-28T13:44:19Z | - |
dc.date.issued | 2019-11 | - |
dc.identifier.govdoc | ERDC/CRREL TR-19-23 | - |
dc.identifier.uri | https://hdl.handle.net/11681/36373 | - |
dc.identifier.uri | http://dx.doi.org/10.21079/11681/36373 | - |
dc.description | Technical Report | - |
dc.description.abstract | Accurate 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.sponsorship | United States. Army. Corps of Engineers. | en_US |
dc.description.tableofcontents | Abstract .......................................................................................................................................................... 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.extent | 32 pages / 2.68 MB | - |
dc.format.medium | - | |
dc.language.iso | en_US | en_US |
dc.publisher | Cold Regions Research and Engineering Laboratory (U.S.) | en_US |
dc.publisher | Engineer Research and Development Center (U.S.) | - |
dc.relation.ispartofseries | Technical Report (Engineer Research and Development Center (U.S.)) ; no. ERDC/CRREL TR-19-23 | - |
dc.rights | Approved for Public Release; Distribution is Unlimited | - |
dc.source | This Digital Resource was created in Microsoft Word and Adobe Acrobat | - |
dc.subject | Glacial landforms | en_US |
dc.subject | New Hampshire | en_US |
dc.subject | Shear strength of soils | en_US |
dc.subject | Soil mechanics | en_US |
dc.subject | Trafficability | en_US |
dc.title | Preliminary assessment of landform soil strength on glaciated terrain in New Hampshire | en_US |
dc.type | Report | en_US |
Appears in Collections: | Technical Report |
Files in This Item:
File | Description | Size | Format | |
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ERDC-CRREL TR-19-23.pdf | 2.68 MB | Adobe PDF | View/Open |