ABSTRACT
Soil pollution brings changes in the macroscopic mechanical properties of soil. As the pollutants invade the soil and interact with the materials, the soil's original physical composition and chemical composition will change, resulting in the transformation of microstructure. For acid polluted laterite under soaking conditions, acid invades laterite and interacts with substances in laterite, and it reacts with oxides, which play a cementing role in laterite, and free oxides to generate salt. At this time, laterite is in a soaking environment. The generated salt dissolves in the solution with water in pores, which take away the components in laterite, resulting in changes in the linked structure between particles and thus leading to changes in the microstructure of laterite. Under soaking conditions, acid pollutes soil with acid soaking in laterite and out the laterite. Acid invasion results in changes in the particle size, particle properties and pore characteristics of laterite.
