Th l R i ti it f S il Thermal Resistivity of Soils and Engineered Materials

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Line heat source methods for thermal properties •Place a line heat source in the sample •Apply heat to the source and measure its temperature over time •From the slope of temperature vs. logarithm of time determine k
Thermal conductivity: line heat source method ange (C ) Tem pe ra ture C h 0.6 0.5 0.4 0.3 0.2 01 0.1 0 k = 0.5 k = 1.0 k = 2.0 0.1 1 10 100 Time (s) k proportional to 1/slope
Page 1 and 2: Thermal Resistivity it of Soils and
Page 3 and 4: TECP Purpose •Measure thermal and
Page 5 and 6: Thermal Properties of Soil Impact W
Page 8 and 9: Outline •Definitions •Thermal p
Page 10 and 11: Which is best, conductivity or resi
Page 12 and 13: Modeling Soil Thermal Properties
Page 14 and 15: Thermal properties of “pure” so
Page 16 and 17: Specific Heat Take-Home • The vol
Page 18 and 19: Liquid Return Flow: soil as a heat
Page 20 and 21: Response to Thermal Conductivity of
Page 22 and 23: Response to Compaction 2 The ermal
Page 24 and 25: Take-home • Thermal conductivity
Page 28 and 29: Making a reading on a sample • In
Page 30 and 31: Contact Resistance Errors •Contac
Page 32 and 33: Comparison of standards ASTM IEEEla
Page 34 and 35: Thermal dryout curves •The relati
Page 36 and 37: Dryout curves on Sand uctivity (W /
Page 38 and 39: Sand data on a resistivity scale Th
Page 40 and 41: Measuring thermal conductivity of c
Page 42 and 43: Measuring thermal conductivity of c
Page 44 and 45: Conclusions • “Measure to Know

Th l R i ti it f S il Thermal Resistivity of Soils and Engineered Materials

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