Field Test Study of the Artificial Ground-Freezing Method Subsurface Excavation Construction of Watered Sandy Stratum in Collapsible Loess Area

Table 2

Related parameters of the coarse sand layer at different temperatures.

Temperature (°C)	Heat conduction (W/(m·°C))	Specific heat (kJ/(kg·°C))	Frost-heaving coefficient (°C^−1)	Elastic modulus (MPa)	Poisson’s ratio
21	1.3	2.4	0	32	0.30
0	1.7	1.8	0	34	0.29
−1	1.7	1.7	−0.02125	50	0.28
−2	1.7	1.7	−0.00575	50	0.28
−5	1.8	1.5	−0.00400	98	0.25
−10	1.9	1.3	−0.00082	170	0.23