Measuring aggregate morphologies based on three‐dimensional curvature analysis

Wang, Feng; Xiao, Yong; Cui, Peide; Mo, Liantong

doi:10.1111/mice.12789

Cited by 15 publications

(2 citation statements)

References 38 publications

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“…The particle shape is evaluated at various geometric levels. Prior research has identified three key criteria for quantifying particle shape: overall shape, roundness, and surface texture [12,13]. Considering that the surface texture is effectively represented by the friction coefficient value in DEM simulations, and this study aims to capture the wide variety of particle shapes, the overall shape emerges as the most suitable criterion for characterization.…”

Section: Statistical Analysis Of Gravel Shapesmentioning

confidence: 99%

Investigating the influence of excitation force on compaction behavior of gravel in granular blends through DEM simulation

Ismail,

Nie,

Ahmad

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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During the construction of subgrades, the compaction of granular blends is typically achieved through vibrational techniques at varying the frequencies and excitation forces. This study investigates the impact of excitation forces, within the range of 300-600 kPa, on subgrade compaction by employing the discrete element method (DEM). Calibration tests were conducted to establish the contact parameters for the DEM models, and their reliability was verified via vibration compaction tests. The research further explores the evolution of settlement, particle motion, and contact interactions at both macroscopic and mesoscopic levels as influenced by the excitation forces. Furthermore, the influence of excitation force on the stability of skeleton frameworks was analyzed. The results indicated that the number of contacts in the final state increased consistently with the excitation force, leading to a more uniform distribution. This change contributes to a time-dependent stability within the skeleton framework, which effectively limits the movement of fine particles in the final stages and diminishes the sliding between the coarse particles. Conversely, in the initial phases, a rise in excitation force increases the stress concentration between the contacts, which increases the sliding damage to the skeleton frameworks and leads to greater compaction deformation.

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Section: Statistical Analysis Of Gravel Shapesmentioning

confidence: 99%

Investigating the influence of excitation force on compaction behavior of gravel in granular blends through DEM simulation

Ismail,

Nie,

Ahmad

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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“…The asphalt mixture is mainly composed of aggregate and asphalt slurry, which includes asphalt and mineral powder. Although the content of the asphalt slurry in asphalt mixture is small, it plays a key role in the quality of the asphalt mixture [ 14 , 15 , 16 , 17 ]. Fiber asphalt slurry is a mixture of asphalt, fiber, and mineral powder.…”

Section: Introductionmentioning

confidence: 99%

Fiber-Reinforced Asphalt Mixture Design on Anti-Skid Surfacing for Field Testing High-Speed Vehicles on Pavements

Liu

et al. 2023

Materials

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Fiber can absorb asphalt binder and therefore reinforce and stabilize the asphalt mixture structure and also prevent the asphalt from the leaking, which occurs in the process of mixing and transport. In this study, three kinds of fiber (polyester fiber, polypropylene fiber, and lignin fiber) are used to evaluate the relationship between the fiber types and mechanic performance of SMA-13 fiber asphalt mixture, which is specially designed for field tests of high-speed vehicles on pavements. The micro-surface characteristics of fiber and aggregates were studied by SEM and image analysis. Marshall stability and splitting strength were used to measure the properties of the asphalt mixture. In addition, a field test, including measures for curve-section edge, curve-section center, straight-section edge, and straight-section center, was conducted to evaluate the skid resistance of the high-speed vehicles that test field pavement. The results show that the Marshall stabilities of asphalt mixture with three kinds of fibers have been improved, whereas the stability of asphalt mixture prepared by polypropylene fiber and polyester fiber particularly increased before immersion. Among the three kinds of fiber asphalt mixtures, the polyester fiber asphalt mixture has enhanced water susceptibility. Skid resistance in the field test indicated that high skid resistance and good surface-texture depth were achieved.

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Intelligent optimization of tamping parameters using discrete element and radial basis function-multi-objective genetic algorithm (RBF-MOGA)

Shi,

Wang,

Gao

et al. 2024

Automation in Construction

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Measuring aggregate morphologies based on three‐dimensional curvature analysis

Cited by 15 publications

References 38 publications

Investigating the influence of excitation force on compaction behavior of gravel in granular blends through DEM simulation

Investigating the influence of excitation force on compaction behavior of gravel in granular blends through DEM simulation

Fiber-Reinforced Asphalt Mixture Design on Anti-Skid Surfacing for Field Testing High-Speed Vehicles on Pavements

Intelligent optimization of tamping parameters using discrete element and radial basis function-multi-objective genetic algorithm (RBF-MOGA)

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