Average thermal properties of soils

From Kersten, with permission

Soil Type

Density,
lbm/ft3

Specific heat,
Btu/lb·°F

Thermal conductivity,
Btu/hr·ft·°F

Northway fine sand

172

0.197

0.48

Northway sand

171

0.185

0.85

Northway silt loam

169

2.325

1.00

Chena river gravel

169

0.194

1.19

Fairbanks silt loam

169

0.183

0.96

Graded Ottawa sand

165

0.164

0.91

Lowell sand

167

0.188

1.03

Crushed quartz

165

0.190

1.30

Crushed granite

167

0.174

0.62