Application of flat-joint contact model for uniaxial compression simulation of large stone porous asphalt Mixes

Yuan, Gaoang; Li, Xiaojun; Hao, Peiwen; Li, Dewen; Pan, Junli; Li, Aiguo

doi:10.1016/j.conbuildmat.2019.117695

Cited by 19 publications

(4 citation statements)

References 24 publications

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“…Ge et al [97] built the 3D DEM model of a trapezoidal specimen for the asphalt mixture in the two-point bending test based on the 3D aggregate morphological characteristics obtained using laser scanning, and then numerically evaluated the complex modulus utilizing the contact dynamic s method. Yuan et al [98] built a 3D DEM model in uniaxial compression loading for a large stone porous asphalt mixture based on the rebuilt irregular aggregate particles using CT technology, while contact characteristics such as coordination number, contact point, and energy were obtained based on the flat-joint contact model, and the compressive strength was also discussed. Ji et al [99] evaluated the rutting behavior of the asphalt mixture modified by Direct Coal Liquefaction Residue (DCLR) using a 2D FEM modeling.…”

Section: Mechanical Behaviors Evaluation On the Asphalt Mixturementioning

confidence: 99%

Review on Design, Characterization, and Prediction of Performance for Asphalt Materials and Asphalt Pavement Using Multi-Scale Numerical Simulation

Wang,

Wang

2024

Materials

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Asphalt pavement, which is mainly made up of the asphalt mixture, exhibits complicated mechanical behaviors under the combined effects of moving vehicle loads and external service environments. Multi-scale numerical simulation can well characterize behaviors of asphalt materials and asphalt pavement, and the essential research progress is systematically summarized from an entire view. This paper reviews extensive research works concerning aspects of the design, characterization, and prediction of performance for asphalt materials and asphalt pavement based on multi-scale numerical simulation. Firstly, full-scale performance modeling on asphalt pavement is discussed from aspects of structural dynamic response, structural and material evaluation, and wheel–pavement interaction. The correlation between asphalt material properties and pavement performance is also analyzed, and so is the hydroplaning phenomenon. Macro- and mesoscale simulations on the mechanical property characterization of the asphalt mixture and its components are then investigated, while virtual proportion design for the asphalt mixture is introduced. Features of two-dimensional and three-dimensional microscale modeling on the asphalt mixture are summarized, followed by molecular dynamics simulation on asphalt binders, aggregates, and their interface, while nanoscale behavior modeling on asphalt binders is presented. Finally, aspects that need more attention concerning this study’s topic are discussed, and several suggestions for future investigations are also presented.

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Section: Mechanical Behaviors Evaluation On the Asphalt Mixturementioning

confidence: 99%

Review on Design, Characterization, and Prediction of Performance for Asphalt Materials and Asphalt Pavement Using Multi-Scale Numerical Simulation

Wang,

Wang

2024

Materials

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“…DEM is a useful method for examining the meso-mechanical characteristics of granular materials and is crucial for understanding the meso-structures of asphalt mixtures. The contact properties of asphalt mixtures based on DEM have been the subject of numerous studies, including those on the impact of coarse aggregate morphology on the mechanical properties of the skeleton [ 34 , 73 , 74 , 75 ], contact meso-structure evaluation indices [ 76 ], and the impact of the contact skeleton on impairing the movement of coarse aggregates [ 77 , 78 ]. The volume indices, rutting resistance, durability, and road performance of asphalt mixtures are all positively correlated with the meso-scale properties of aggregate contact [ 79 ].…”

Section: Characterization Of Load Transfer Mechanismmentioning

confidence: 99%

Review on Load Transfer Mechanisms of Asphalt Mixture Meso-Structure

Wang

Miao

et al. 2023

Materials

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Asphalt mixture is a skeleton filling system consisting of aggregate and asphalt binder. Its performance is directly affected by the internal load transfer mechanism of the skeleton filling system. It is significant to understand the load transfer mechanisms for asphalt mixture design and performance evaluation. The objective of this paper is to review the research progress of the asphalt mixture load transfer mechanism. Firstly, this paper summarizes the test methods used to investigate the load transfer mechanism of asphalt mixtures. Then, an overview of the characterization of load transfer mechanism from three aspects was provided. Next, the indicators capturing contact characteristics, contact force characteristics, and force chain characteristics were compared. Finally, the load transfer mechanism of asphalt mixtures under different loading conditions was discussed. Some recommendations and conclusions in terms of load transfer mechanism characterization and evaluation were given. The related work can provide valuable references for the study of the load transfer mechanism of asphalt mixtures.

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“…Considering that computational mechanics models are efficient tools in the evaluation of phenomena that are difficult to assess in the laboratory or in the field, a variety of such models have been developed in recent years to assess clogging (i.e., progressive reduction in the AV content of PFC due to contaminants such as rubber or dust, among others), ravelling (i.e., the loss of aggregates due to the repetitive passing of vehicles that leads to mixture disintegration starting from the surface layer), and other phenomena that can affect the functionally and durability of PFC. Most of these works have used Finite Element Methods (FEM) (Huurman et al, 2010;Zhang et al, 2016;Manrique-Sanchez et al, 2018;Manrique-Sanchez and Caro, 2019), while a few have used a Discrete Element Method (DEM) approach (Alvarez et al, 2010a;Yuan et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

“…These images are exhaustively analysed and processed to reconstruct the 3D PFC microstructure. Yuan et al (2020) used this technique to simulate the response of a PFC specimen subjected to an axial compression test.…”

Section: Introductionmentioning

confidence: 99%

Random generation of 2D PFC microstructures through DEM gravimetric methods

Manrique-Sánchez

Caro

Estrada

et al. 2020

Road Materials and Pavement Design

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Computational mechanics has proven to be a useful method to understand and assess the mechanical behaviour and main degradation mechanisms of Porous Friction Courses (PFC) at the microstructural level. However, a common limitation when preparing these models is the difficulty to achieve realistic microstructures. The ideal model to evaluate the mechanical behaviour and the degradation mechanisms of PFCs would use a three-dimensional (3D) geometry of the mixture with realistic aggregate shape, angularity, and gradation. However, these models are computationally expensive and typically related with numerical instabilities. This paper proposes a novel methodology to generate two-dimensional (2D) random PFC microstructures using gravimetric methods through Discrete Element Method (DEM) modelling. The proposed methodology was calibrated to generate coarse aggregates with realistic and controlled morphological properties. The produced 2D microstructures were implemented in the Finite Element Method (FEM) Abaqus ® and, after coating the particles with asphalt mortar, they were used to verify that the microstructures were able to reproduce the mechanical response -measured through the dynamic axial modulus-of an actual PFC mixture tested in the laboratory. The results show that the proposed methodology is able to produce microstructures with the same dynamic modulus than an actual PFC mixture at different loading frequencies. Among other applications, this methodology could be used to estimate the mechanical properties of PFC mixtures or to assess the expected performance and durability of any specific PFC under realistic field conditions.

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Application of flat-joint contact model for uniaxial compression simulation of large stone porous asphalt Mixes

Cited by 19 publications

References 24 publications

Review on Design, Characterization, and Prediction of Performance for Asphalt Materials and Asphalt Pavement Using Multi-Scale Numerical Simulation

Review on Design, Characterization, and Prediction of Performance for Asphalt Materials and Asphalt Pavement Using Multi-Scale Numerical Simulation

Review on Load Transfer Mechanisms of Asphalt Mixture Meso-Structure

Random generation of 2D PFC microstructures through DEM gravimetric methods

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