Exploration of Mechanical Behaviors of Argillaceous Siltstone through Photoelastic Model Test and DEM Modelling

Table 1

Model parameters.

Parameters	Dimension	Scaled factor (prototype/model)	Prototype	Model
Diameter of skeleton	L	1 : 200	0.03 mm/0.05 mm	6 mm/10 mm
Young’s modulus of skeleton	M/(L ∗ T^2)	11.9 : 1	50 GPa	4.2 GPa
Poisson's ratio of skeleton	—	1 : 1	0.15∼0.22	0.20
Young’s modulus of clay mineral	M/(L ∗ T^2)	11.9 : 1	6.2 Gpa	0.53 GPa
Poisson’s ratio of clay mineral	—	1 : 1	0.25	0.28

Measurement at room temperature of 18°C.