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Title: Preliminary assessment of landform soil strength on glaciated terrain in New Hampshire
Authors: Hodgdon, Taylor S.
Shoop, Sally A. (Sally Annette)
Keywords: Glacial landforms
New Hampshire
Shear strength of soils
Soil mechanics
Publisher: Cold Regions Research and Engineering Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: Technical Report (Engineer Research and Development Center (U.S.)) ; no. ERDC/CRREL TR-19-23
Abstract: Accurate terrain characterization is important for predicting off-road vehi-cle mobility. Soil strength is a significant terrain characteristic affecting ve-hicle 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.
Description: Technical Report
Gov't Doc #: ERDC/CRREL TR-19-23
Rights: Approved for Public Release; Distribution is Unlimited
Size: 32 pages / 2.68 MB
Types of Materials: PDF
Appears in Collections:Technical Report

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