Laboratory Simulation of Buried Pipe in a Trench under Freezing Conditions : Thermal and Mechanical Responses of Leda Clay under Freezing : First Report of Phase-1

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TypeTechnical Report
Series titleInternal Report, Institute for Research in Construction, National Research Council Canada; Volume 724
Physical description62 p.
SubjectRehabilitation techniques; Pipes and pipelines
AbstractCanadian municipalities and regional governments experience a significant number of water main breaks. In general, metallic water mains break when corrosion has progressed to a degree such that the pipes can no longer withstand a combination of various forces such as traffic loads, earth pressures, pressure due to frost heave, water pressure, and thermal stresses due to temperature change. A survey conducted by the National Research Council of Canada (NRCC) and other literature indicates that water main breaks tend to increase during winter. This trend suggests that one possible cause of water main breaks during winter may be the increase in the earth pressure (frost load) associated with freezing of soils. Field tests have been undertaken by NRCC in collaboration with municipalities to study different forces acting on buried pipes.The shortcoming of the field test, however, is that soil properties and environmental conditions such as water table and temperatures can not be controlled, and therefore it is difficult to differentiate the relationships between these influential factors and responses of the pipe. One way to produce experimental data under controlled conditions is to perform laboratory tests.
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedNo
NRC number7168
NPARC number20337853
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Record identifier0060b230-ef7a-4a33-9412-7ce7df0d5179
Record created2012-07-19
Record modified2016-10-03
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