. 2022 Feb 21;15(4):1613. doi: 10.3390/ma15041613

Table 3.

Characteristic stress of Na₂SO₄ corroded sandstone (σ₃ = 10 MPa).

Na₂SO₄		σ_cc (MPa)	σ_ci (MPa)	σ_cd (MPa)	σ_pk (MPa)	σ_cc/σ_pk	σ_ci/σ_pk	σ_cd/σ_pk	σ_ci/σ_cd
pH	2	36.04	58.09	81.50	115.71	0.3115	0.5020	0.7043	0.3115
	4	38.26	63.89	91.13	125.73	0.3043	0.5082	0.7248	0.3043
	6	42.55	72.11	101.08	138.96	0.3062	0.5189	0.7274	0.3062
	7	44.58	74.69	107.19	146.83	0.3036	0.5087	0.7300	0.3036
	8	43.59	73.85	105.54	144.81	0.3010	0.5100	0.7288	0.3010
	10	41.35	68.57	98.50	135.38	0.3054	0.5065	0.7276	0.3054
	12	37.89	62.65	90.48	124.57	0.3042	0.5029	0.7263	0.3042
α (mol·L⁻¹)	0.02	36.04	58.09	81.50	115.71	0.3115	0.5020	0.7043	0.3115
	0.04	35.47	56.11	80.56	112.14	0.3214	0.5004	0.7451	0.3214
	0.06	34.36	53.94	79.66	101.62	0.3430	0.5308	0.8036	0.3430
	0.08	33.07	48.46	74.83	97.04	0.3408	0.4994	0.7711	0.3408
	0.10	30.84	44.31	67.72	86.54	0.3564	0.5120	0.7825	0.3564