Experimental Study on the Influence of Buried Geothermal Pipes on the Temperature Field of Concrete Roads

Table 8

Temperature rise value of the second, third, and fourth layers under two burial depths.

Position	Depth (cm)	Initial temperature (°C)	Temperature after 2 h (°C)	Temperature after 6 h (°C)	The temperature rise value between initial temperature and temperature after 6 h (°C)
The second layer	15	6.49	14.67	18.03	11.54
	25	6.47	13.72	17.11	10.64
The third layer	15	7.76	12.12	14.79	7.03
	25	7.81	14.33	17.73	9.52
The fourth layer	15	9.05	11.45
	25	9.15	12.28