Soil shear creep tester is a specialized experimental equipment used to study the creep characteristics of soil under long-term shear stress. It simulates the shear deformation process of soil under constant load, measures parameters such as creep deformation, creep rate, and long-term strength of soil, and provides important data for stability analysis of geotechnical engineering (such as slopes, foundations, tunnels, etc.).

The rheological properties of soil are studied using the theoretical viewpoints and methods of elastic bodies (Hooke bodies), plastic bodies (Saint Venant bodies), and viscous bodies (Newtonian bodies) to investigate the stress-strain relationship of soil, which varies with temperature and time.

The fact that the shear strength of cohesive soil decreases over time due to creep effect is well known.