Effect of Particle Shape and Confining Pressure on Breakage and Deformation of Artificial Rockfill
- Publication Type:
- Journal Article
- Citation:
- International Journal of Geosynthetics and Ground Engineering, 2019, 5 (2)
- Issue Date:
- 2019-06-01
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Yang2019_Article_EffectOfParticleShapeAndConfin.pdf | Published Version | 1.44 MB |
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© 2019, Springer Nature Switzerland AG. The rockfill exhibits a substantial amount of particle breakage when subjected to higher range of stresses. The deformations of rockfill under such excessive stresses often lead to failure and cannot be ignored. The degree of particle breakage is related to the type of the material as well as the particle shape. Based on this, artificially simulated rockfill materials with three different aggregate shapes (prism, cube, and cylinder) were prepared by cement paste-casting method. Through a series of medium-sized triaxial shear tests, the effects of confining pressure and particle shape on the fracture characteristics of the artificial rockfill and its secant modulus were investigated. The useful relationships between particle sphericity and roundness with deformation modulus and particle breakage rate were proposed.
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