Damage Characteristics of Sandstone Subjected to Coupled Effect of Freezing-Thawing Cycles and Acid Environment

Figure 6

T2 spectrum of sandstone that underwent coupled effect of acid corrosion and recurrent F-T cycles. (a–d) Samples immersed in solution with pH of 2.8, 4.2, 5.6, and 7.0.

(a)

(b)

(c)

(d)