New Technology and Experimental Study on Snow-Melting Heated Pavement System in Tunnel Portal

Table 3

Physical parameters of the pavement material.

Material property	Thermal conductivity (J/(M °C))	Heat capacity (J/(kg °C))	Density (kg/m^3)
Gravel asphalt concrete	1.3	920	2600
Cement concrete	2.56	1390	2480
Thermal insulation layer	0.022	2600	37.5