Comparative Analysis of Thermomechanical Properties and Thermal Damage Constitutive Models of Three Soft Sedimentary Rocks

Table 3

Values of A(t), B(t), and C(t) at each test temperature.

Lithology	Temperature (°C)	A(t)	B(t)	C(t)
Sandstone	25	1.0455	1.0048	0.9361
	30	1.0439	1.0483	0.6362
	35	1.0308	1.0747	0.4731
	40	1.0063	1.0882	0.4071
	45	0.9703	1.0930	0.3987
	50	0.9229	1.0930	0.408
	55	0.8640	1.0927	0.3954
Sandy mudstone	25	85.846	–25.510	405.378
	30	149.069	–67.590	1001.600
	35	237.841	–152.820	2153.753
	40	355.799	–309.980	4181.300
	45	505.981	–579.852	7508.703
	50	690.449	–1018.030	12674.800
	55	909.466	–1696.607	20353.428
Mudstone	25	0.998559	1.003841	0.997476
	30	1.004532	1.000368	0.980951
	35	1.010092	0.997308	0.965624
	40	1.015254	0.994646	0.951448
	45	1.020031	0.992369	0.938376
	50	1.024438	0.990463	0.926363
	55	1.028486	0.988914	0.915361