Effects of Heating Rate on the Dynamic Tensile Mechanical Properties of Coal Sandstone during Thermal Treatment

Table 2

Physical parameters of sandstone under different heating rates.

(°C·min^−1)	0	5	10	20	30	40	50
	(Normal temperature)
(km/s)	2.50	0.833	0.806	0.781	0.758	0.732	0.704
(g/cm^3)	2.45	2.32	2.29	2.26	2.23	2.21	2.18
(10^−5)	—	1.83	2.28	2.99	3.31	3.81	4.61