Research Article

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

Table 5

Fitting parameters of relationship between peak strain and soaking time.

Mechanical parametersSoaking solutionabcdR2Soaking solutionabcdR2

Peak strain (10−3)pH = 1 H2SO40.99422.03883.85845.1530.996pH = 1 HCl1.37722.46382.42740.1690.995
pH = 3 H2SO43.07213.20560.41025.0650.996pH = 3 HCl1.82313.89956.22934.5210.980
pH = 5 H2SO43.14911.84561.57226.6020.996pH = 5 HCl3.09812.41163.53827.1430.996
pH = 7 H2O3.0159.53473.11942.5020.999