Evolution of Strength Parameters for Sandstone Specimens during Triaxial Compression Tests

<div>(a) Variation in strength parameters of the Mohr–Coulomb criterion with plastic deformation; (b) variation in strength parameters of the Drucker–Prager criterion with plastic deformation.</div>

Advances in Civil Engineering

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Figure 5

Figure 5: Evolution of Strength Parameters for Sandstone Specimens during Triaxial Compression Tests 