Effect of the surface-area-to-volume ratio on dissolution and deterioration of acid-corroded sandstone

This study investigates the impact of hydro-chemical action on the deterioration of physical and mechanical properties of rock, with a specific focus on sandstone subjected to HCl, and H2SO4 solutions with pH values of 2 and 5. The research explores the role of the surface-area-to-volume (SATV) ratios of 0.65 and 0.70 in influencing the dissolution and deterioration of sandstone. A chemical kinetic model is developed to explore the diffusion-dissolution mechanism. Following acid corrosion, the porosity of sandstone increases, marked by a decline in small pores (r ≤ 1 μm) and an increase in medium (1 μm