Article
Engineering, Geological
Dawa Seo, Changbum Sohn, Mehmet B. Cil, Giuseppe Buscarnera
Summary: This study shows that particle shape has a significant impact on the comminution and fracture processes, with rounder particles exhibiting more severe shape alterations under high compressive stress. The initial influence of particle shape diminishes at higher pressures when crushing primarily involves finer grain fractions.
Article
Engineering, Geological
Hao Wang, Yu-Jun Cui, Feng Zhang, Jingjing Liu
Summary: The compression behavior of fine-grained soils is mainly influenced by pore collapse and grain breakage, while sands are mainly controlled by grain breakage. The compressibility of sand-clay mixtures is affected by the fine fraction content, with low fine fractions being influenced by grain breakage, high fine fractions by pore collapse, and medium fine fractions by both pore collapse and grain breakage. The sequence of pore collapse and grain breakage in sand-clay mixtures is consistent with the compression behavior of natural fine-grained soils.
Article
Engineering, Geological
Deheng Wei, Budi Zhao, Yixiang Gan
Summary: The study investigates single particle crushing behavior using the combined finite-discrete element method (FDEM) and reconstructs particle shapes with spherical harmonic (SH) in both spherical and Cartesian coordinate systems. Low mesh quality may result in fluctuations on load-displacement curves, affecting contact stiffness and fracture patterns of particles.
JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING
(2022)
Article
Engineering, Geological
John M. Harmon, Dawa Seo, Giuseppe Buscarnera, Jose E. Andrade
Summary: This paper attempts to predict the evolving statistics of inter-particle contact forces during comminution using grain-scale computational modelling. The largest particles provide strength in the loading direction, while small particles play a significant part in providing radial stability.
Article
Engineering, Geological
Xianda Shen, Giuseppe Buscarnera
Summary: A fabric-enriched continuum breakage mechanics framework is developed to examine the relationship between elastic and inelastic anisotropy in granular materials subjected to high pressure. The framework accurately predicts anisotropic yielding and inelastic stress-strain response solely based on measurements of elastic anisotropy and provides insights into the impact of anisotropic strain energy storage on the yield cap of granular materials.
Article
Engineering, Geological
Alexia Cindy Wagner, Joao Vitor de Azambuja Carvalho, Joao Paulo Sousa Silva, Hugo Carlos Scheuermann Filho, Nilo Cesar Consoli
Summary: The disposal of iron ore tailings in dry stacks is becoming more common in Brazil. This study investigates the breakage behavior of the tailings under different laboratory tests simulating compaction and vibration loading. The results show that the tailings only experience particle breakage under extremely high pressures, while the frequency of load and number of cycles are not significant factors in particle breakage under normal field pressures.
PROCEEDINGS OF THE INSTITUTION OF CIVIL ENGINEERS-GEOTECHNICAL ENGINEERING
(2023)
Article
Engineering, Geological
Mengmeng Wu, Jianfeng Wang
Summary: In this study, a new approach using X-ray micro-computed tomography (μCT) and sand particle tracking techniques is employed to investigate the particle breakage behavior of sands. The results show that the degree of particle breakage is minimal during the consolidation stage and more than half of the particles experience their first breakage before reaching peak stress. Significant particle breakage occurs at the center of the specimen during the post-peak stage.
Article
Engineering, Chemical
Yang Yang, Yinghui Tian, Chunhui Zhang, Le Wang, Mi Zhou, Junbiao He
Summary: This paper proposes an approach to predict particle breakage and gradation evolution for carbonate sands using compression tests. Two key concepts, 'Breakage ratio' and 'Evolution Distribution Matrix', are developed to answer important questions about particle breakage and the proportion of new particles. Experimental results validate the feasibility and effectiveness of the proposed approach.
Article
Engineering, Marine
Zachary J. Westgate, Don J. DeGroot, Christopher McMullin, Yuanjing Zou, Dongdong Guo, Simon Van Haren, Ryan D. Beemer, Danilo Zeppilli, Kenneth G. Miller, James V. Browning
Summary: This paper provides an overview of glauconite sand formation, describes its depositional environment and maturation process, and summarizes the current knowledge of geotechnical challenges in glauconite sands. Laboratory test results show that the initial conditions, drying methods, and degradation methods of glauconite sands affect their geochemical and mechanical characteristics. The degree to which particles crush or degrade from their natural form to clay-size particles is linked to maturity and depositional method.
Article
Engineering, Geological
Yang Yang, Chunhui Zhang, Rong Wang, Mingjing Jiang, Yinghui Tian
Summary: This study examines the engineering properties of transitional soils mixed with terrestrial silicate and marine carbonate deposits. The research found that soil deformation is caused by inter-particle rearrangement and particle breakage. The test results show that particle breakage tends to play a dominant role on the deformation with increasing content of carbonate sand and load level.
ENGINEERING GEOLOGY
(2021)
Article
Engineering, Geological
Bo Zhou, Quan Ku, Changheng Li, Huabin Wang, Youkou Dong, Zhuang Cheng
Summary: This paper investigates the particle breakage behaviour of carbonate sand using single-particle compression experiments and simulation methods. The results show that the strength of sand particles is influenced by the presence of intra-particle pores, with those filled having higher strength.
Article
Engineering, Geological
L. Cheng, M. S. Hossain, Y. Hu, Y. H. Kim, S. N. Ullah
Summary: This paper presents the development of a particle breakage model based on the modified Mohr-Coulomb model within a finite-element framework. The additional energy consumed due to particle breakage is incorporated through the modified strength-dilatancy relationship. A new particle breakage index is introduced and linked to the mobilized friction angle. The model is validated against triaxial tests and can provide reasonable predictions for soil-structure interaction problems.
JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING
(2022)
Article
Engineering, Geological
Ningning Zhang, Matteo O. Ciantia, Marcos Arroyo, Antonio Gens
Summary: In this study, the combination of DEM particle crushing model and rough Hertzian contact model was explored to improve the accuracy and effectiveness of DEM models, especially in the process of particle crushing. Through simulations, it was found that accurately incorporating contact roughness values into the model can better capture particle size evolution and mechanical responses.
SOILS AND FOUNDATIONS
(2021)
Article
Engineering, Geological
Ke Shi, Fan Zhu, Jidong Zhao
Summary: In this paper, a multi-scale computational approach is used to investigate the shear behavior of crushable granular sand under general stress conditions. The study provides insights into the changes in macro- and micro-scale material behaviors induced by grain crushing, including strength, deformability, particle size and shape evolution. The study also discusses the competition between grain size change and grain shape change in dictating the deformation of crushable sand.
Article
Engineering, Geological
Junghee Park, J. Carlos Santamarina
Summary: This study investigates the load-deformation behavior of sands under high- and low-stress cycles. The findings suggest that sands exhibit critical changes in void ratio and stiffness after a certain number of high-stress or low-stress cycles, and they also increase in stiffness during repetitive loading due to crushing and contact flattening effects.
JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING
(2023)
Article
Engineering, Geological
W. Li, M. R. Coop
CANADIAN GEOTECHNICAL JOURNAL
(2019)
Article
Engineering, Geological
Wanying Wang, Matthew R. Coop, Kostas Senetakis
GEOTECHNICAL TESTING JOURNAL
(2019)
Article
Engineering, Geological
Alessandra Nocilla, Margherita Zimbardo, Matthew Richard Coop
SOILS AND FOUNDATIONS
(2019)
Article
Engineering, Geological
Budi Zhao, Jianfeng Wang, Edward Ando, Gioacchino Viggiani, Matthew R. Coop
CANADIAN GEOTECHNICAL JOURNAL
(2020)
Article
Engineering, Geological
M. A. Carrion, M. R. Coop, A. Nocilla
SOILS AND FOUNDATIONS
(2019)
Article
Engineering, Geological
Yujie Qi, Buddhima Indraratna, Matthew Richard Coop
INTERNATIONAL JOURNAL OF GEOMECHANICS
(2019)
Article
Computer Science, Interdisciplinary Applications
Quan Sun, Junxing Zheng, Matthew R. Coop, Fatin N. Altuhafi
COMPUTERS AND GEOTECHNICS
(2019)
Article
Engineering, Geological
Haiwen Li, Kostas Senetakis, Matthew R. Coop
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2019)
Article
Engineering, Geological
Maria Cristina Todisco, Matthew Richard Coop
SOILS AND FOUNDATIONS
(2019)
Article
Engineering, Environmental
Ismail Adeniyi Okewale, Matthew Richard Coop
BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
(2020)
Article
Engineering, Geological
C. S. Sandeep, K. Senetakis, D. Cheung, C. E. Choi, Y. Wang, M. R. Coop, C. W. W. Ng
Summary: The coefficient of restitution (COR) plays an important role in the numerical simulation of granular flows. A new micromechanical impact loading apparatus was used to study COR and energy loss in different grain and base block combinations. The experiments showed variations in COR values, especially with impacts between materials of different composite Young's modulus. Natural sand grains exhibited greater scatter in COR values due to individual variations in elastic and morphological characteristics.
CANADIAN GEOTECHNICAL JOURNAL
(2021)
Article
Engineering, Civil
Zhuang Cheng, Jianfeng Wang, Matthew Richard Coop, Guanlin Ye
FRONTIERS OF STRUCTURAL AND CIVIL ENGINEERING
(2020)
Article
Engineering, Geological
S. S. Kasyap, K. Senetakis, M. R. Coop, J. Zhao
Summary: The shearing behavior of reproduced flat LBS grains bonded with different materials was studied experimentally, revealing different failure mechanisms and proposing a new mechanism for dilation. Additionally, a method for conducting cyclic shearing tests on OPC-bonded sands was introduced, and the effects of displacement amplitude and normal load on the test results were discussed.
Article
Engineering, Geological
C. P. Y. Wong, M. R. Coop
GEOTECHNIQUE LETTERS
(2020)
Article
Engineering, Geological
P. M. Ferreira, M. R. Coop
GEOTECHNIQUE LETTERS
(2020)