The Equilibrium Time and Salt Expansion Characteristic of Sulfate Saline Soil upon Cooling

Table 4

Stability standard and stabilization time of sample temperature under gas bath conditions.

Initial temperature of a sample	Ambient temperature	Temperature difference	Control standard	Judgment temperature	Stable time (test 1)	Stable time (test 2)	Stable time (test 3)	Stable time (test 4)
25	12	13	0.99	12.13	9.9	20.0	30.0	130.1
12	8	4	0.99	8.04	11.6	20.6	33.0	130.3
8	4	4	0.99	4.04	11.5	20.6	33.0	130.3
4	1	3	0.99	1.03	11.5	20.6	32.7	127.5
25	12	13	0.95	12.65	5.8	11.8	18.5	86.2
12	8	4	0.95	8.20	6.6	13.3	20.5	88.6
8	4	4	0.95	4.20	6.5	13.3	20.9	88.6
4	1	3	0.95	1.15	6.5	13.2	19.9	88.6
25	12	13	0.1°C	12.10	10.3	20.9	31.2	135.7
12	8	4	0.1°C	8.10	8.0	16.5	24.9	106.9
8	4	4	0.1°C	4.10	7.9	16.5	25.4	106.9
4	1	3	0.1°C	1.10	7.4	14.6	24.2	99.6

Note. The temperature unit in the table is °C; the unit of time in the table is the hour (h).