Laboratory studies of the adfreeze bond between small- scale model piles and frozen sand

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Pages714720; # of pages: 7
SubjectSoils; freezing; cylinder piles; pile foundations; frozen soils; creep tests; adfreeze strength; natural b.c. fir wood piles; creosoted b.c. fir piles; concrete piles; steel piles
AbstractThe adfreeze strength developed during freezing of cylindrical piles to fine Ottawa sand mixed with 14% by weight of water was measured under constant rates of pile displacement on an Instron testing machine and under constant load [in a creep equipment]. Four types of pile were studied: natural B.C. fir, concrete, steel coated with a red oxide primer, and creosoted B.C. fir. Constant rate tests showed that adfreeze strength increased with increasing load rate. Preliminary data from the constant load creep tests indicate that the load dependence of the steady-state creep rate for piles in frozen sand agrees with the displacement rate dependence of the adfreeze strengths determined by extrapolation of the results of the constant rate tests. In general, maximum adfreeze strength developed with natural B.C. fir, and the minimum with creosoted B.C. fir.
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedNo
NRC number17089
NPARC number20375172
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Record identifier006d8b89-af3a-45b3-9c30-d45b6557a4db
Record created2012-07-23
Record modified2016-05-09
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