Adfreeze strength of frozen sand to model piles

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Journal titleCanadian Geotechnical Journal
Pages494500; # of pages: 7
SubjectCement and Concrete; Permafrost; Soils; pile foundations; loads; frozen soils; piles; wood, steel, concrete piles; coated, uncoated piles; permafrost conditions
AbstractLaboratory measurements of adfreeze strength of Ottawa fine sand to three different types of model piles under constant rates of loading are reported in this paper. Adfreeze strength, tau[f], at peak load increased with increasing loading rate (i.e., rate of displacement of cross-head of the testing machine), l dot, and followed a power law tau[f] approximately equal to l dot[m]. The maximum adfreeze bond strength developed with uncoated wood piles (B.C. fir and spruce). Concrete piles developed adfreeze bond strengths lower than wood but higher than steel and coated piles. Coatings (creosote, paint, etc.) reduced adfreeze bond strength considerably. In decreasing order of adfreeze bond strength, the piles rated as follows: uncoated B.C. fir, uncoated spruce, concrete, unpainted steel cylindrical and H- sections, creosoted B.C. fir, and, finally, painted steel pipe.
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
NRC number17010
NPARC number20375227
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Record identifierd087cc08-6424-4b35-bde1-52ca8d55a801
Record created2012-07-23
Record modified2016-05-09
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