|Title: ||Cone penetration testing in polar snow|
|Authors: ||McCallum, Adrian Bruce|
|Issue Date: ||10-Apr-2012|
|Abstract: ||Innovative Cone Penetration Testing (CPT) using adapted commercial CPT equipment
was conducted in Antarctica in early 2010 in an attempt to assess the strength of polar
snow; additionally, application of CPT data was considered, particularly in estimating
surface bearing capacity. Almost 100 CPT tests were carried out and both qualitative
and quantitative analysis of data was undertaken. Additional supporting testing in-
cluded snow density assessment, snow strength assessment, extrapolation of CPT data
via Ground Penetrating Radar (GPR) and preliminary mini-cone penetrometer testing
Analysis of results revealed that assessing the strength of polar snow via CPT is
affected by numerous factors including penetration rate, cone size/shape and snow
material properties, particularly compaction of the snow undergoing penetration. A
density-dependant relationship between CPT resistance and snow shear strength was
established, and methods for estimating surface bearing capacity directly from CPT in
homogeneous and layered polar snow were proposed.
This work applied existing technology in a new material and shows that CPT can
be used efficiently in polar environs to provide estimates of snow shear strength and
surface bearing capacity, to depths of 10 m or more.|
|Appears in Collections:||Theses - SPRI|
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