Paul Murchison, Project Engineer, Transportation Engineering ...

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Permafrost Test Section – Alaska Highway• Twelve instrumented test sections.• The test site is heavily instrumented over 300 thermisters, 150 surfacetemperature loggers, heat flux plates, groundwater sensors and weathermonitoring equipment (air temperature, snow depth, wind speed anddirection).• Temperatures are recorded hourly and transmitted by satellite every fourhours to the GOY SCADA (Supervisory Control and Data Acquisition)server in Whitehorse.
Air Convection Embankment (ACE)• Constructed using 150 mm to 300 mm, crushed,rock to form interconnected, convective cells inthe embankment.– Winter – air cooled in the upper voids travels downinto the embankment displacing warm air whichrises and exits from the embankment.– Summer – the rock insulates the ground andreduces warming by keeping warm air near thesurface and cool air at the base of the ACE.
Page 1 and 2: Stabilizing Highways OverDegrading
Page 3 and 4: Yukon Highway Infrastructure• Are
Page 5 and 6: Infrastructure Maintenance IssuesWa
Page 7 and 8: BCIInfrastructure Maintenance Issue
Page 9 and 10: Infrastructure Maintenance IssuesPe
Page 11 and 12: Yukon Climate TrendsData Source: En
Page 13: Data Source: SNAP(2010)Yukon Climat
Page 17 and 18: Heat Drains• Heat extraction by n
Page 19 and 20: • Light-coloured aggregateBST ref
Page 21 and 22: Data Analysis Results
Page 23: Thank you

Paul Murchison, Project Engineer, Transportation Engineering ...

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