The Physicomechanical Deterioration Characteristics and Mesoscopic Damage Analysis of Sandstone under Acidic Environment

Figure 10

CT images of the middle layer of sandstone specimens subjected to different solutions for different stages: (a) pH = 3 H₂SO₄ (0 days), (b) pH = 3 H₂SO₄ (30 days), (c) pH = 3 H₂SO₄ (90 days), (d) pH = 3 H₂SO₄ (180 days), (e) pH = 1 HCl (0 days), (f) pH = 1 HCl (30 days), (g) pH = 1 HCl (90 days), and (h) pH = 1 HCl (180 days).

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