Temperature Field Variation Law of Low Exothermic Polymer Grouting Material in Repairing Void Damage of Frozen Soil Subgrade

Table 1

Thermal properties of the subgrade materials.

Parameters	AC-13 SBR-modified asphalt	AC-16 unmodified asphalt	Cement-stabilized macadam	Cement-stabilized gravel	Polymer grouting material
Density ρ (kg/m^3)	2291	2316	2374	2340	250
Specific heat capacity C (J/(kg·°C))	1124	917	1127	1141	1500
Thermal conductivity λ (W/(m·°C))	3.780	4.356	4.572	4.320	0.146