Research Article
The Influence of Loading Rate on Direct and Indirect Tensile Strengths: Laboratory and Numerical Methods
Table 1
Micro and macro mechanical parameters of sandstone specimens.
| | Microparameters | Value | Macro parameters | Value |
| | Particle radius range (mm) | 0.45–0.75 | Uniaxial compression strength (MPa) | 66.2 | | Particle contact modulus (GPa) | 21 | | Particle normal/shear stiffness (GPa) | 21 | | Friction coefficient | 0.25 | Young’s modulus (GPa) | 19.8 | | Normal strength of the flat-joint contact (MPa) | 2.5 | | Shear strength of the flat-joint contact (MPa) | 28 |
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