Journal Published Online: 05 October 2022
Volume 51, Issue 2

Modeling the Particle Breakage via Breakage Energy during Triaxial Shearing

CODEN: JTEVAB

Abstract

Rockfill materials are widely used as foundation in construction and different degrees of particle breakage inevitably show different characteristics. The breakage index (e.g., Marsal breakage index, Bg) of rockfill materials directly measured though experimental method naturally has an intrinsic correlation with the physical description applied by theoretical method (e.g., breakage energy, Eb) for the same process of crushing. Eb back-calculated by the incremental energy equations of Ueng’s models may be violating the law of irreversibility for energy accumulation because they treat the critical friction ratio Mc as a constant. This can be solved by constructing a function express that resets the friction ratio as a variable related to shear strain and critical state friction ratio. By utilizing experimental data of three kinds of granular aggregates, it was found that Bg is proportional to the increase of Eb, regardless of whether shear strains are during shearing or after. The method proposed in this paper can be used to calculate the effect of particle breakage in the whole shear process without multiple tests.

Author Information

Jian, Fuxian
Geotechnical Engineering Department, Nanjing Hydraulic Research Institute, Nanjing, China
Li, Xiaomei
Geotechnical Engineering Department, Nanjing Hydraulic Research Institute, Nanjing, China
Guo, Wanli
Geotechnical Engineering Department, Nanjing Hydraulic Research Institute, Nanjing, China
Pages: 11
Price: $25.00
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Details
Stock #: JTE20220090
ISSN: 0090-3973
DOI: 10.1520/JTE20220090