Discrete Element Modeling of Asphalt ConcreteMicrofabric
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Discrete Element Modeling of Asphalt ConcreteMicrofabric .

Discrete Element Modeling of Asphalt Concrete:

2001-1-1  A microfabric discrete element modeling (MDEM) approach is presented for modeling asphalt concrete microstructure. The technique is a straightforward extension of a traditional discrete element modeling (DEM) analysis, in which various material phases (e.g., aggregates, mastic) are modeled with clusters of very small, discrete elements.

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(PDF) Discrete element modeling of asphalt concrete ...

Discrete element modeling of asphalt concrete cracking using a user-defined three-dimensional micromechanical approach. December 2011; Journal of Wuhan University of

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Three-dimensional discrete element modeling of asphalt ...

2012-12-1  Highlight Element size effects were investigated on three-dimensional discrete element modeling of asphalt concrete. Mineral aggregate particles were simulated with the randomly created ellipsoids. Element sizes gave insignificant impacts on the predicted creep stiffness. Element size could affect time-steps, computational time, aggregate shape representations, etc. The keywords are as

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Three-dimensional discrete element modeling of asphalt ...

Highlight Element size effects were investigated on three-dimensional discrete element modeling of asphalt concrete. Mineral aggregate particles were simulated with the randomly created ellipsoids. Element sizes gave insignificant impacts on the predicted creep stiffness. Element size could affect time-steps, computational time, aggregate shape representations, etc. The keywords are as follows: 1.

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Lab assessment and discrete element modeling of asphalt ...

2018-9-10  Both laboratory and discrete element modeling were employed to investigate effects of coarse aggregate shapes on asphalt mixture compaction. Five types of aggregates were manually selected, and the SGC compaction tests and the corresponding discrete element modeling were conducted with seven combinations of those types of aggregates.

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Accelerated Discrete-Element Modeling of Asphalt-Based ...

This paper presents a methodology to reduce the computation time for discrete-element (DE) modeling of asphalt-based materials, based on the frequency-temperature superposition principle. Laboratory tests on the dynamic modulus of asphalt sand mastics and asphalt mixtures were conducted at temperatures of -5, 4, 13, and 21°C and frequencies of ...

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Micromechanical Discrete Element Modeling of Asphalt ...

This study aims to investigate the shear fatigue performance of asphalt mixture and factors influencing performance using a three-dimensional (3D) discrete element method (DEM) incorporated with the Burgers model. The repeated uniaxial penetration test (RUPT), which is a shear fatigue test method for asphalt mixtures, was succinctly described.

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New discrete element framework for modelling asphalt ...

2020-4-10  contribute to this important topic, by presenting a new Discrete Element Method (DEM)-based modelling approach to study the asphalt compaction process. Discrete Element Method (DEM) received recently considerable attention as an analysis tool for studying the mechanical behaviour of asphalt mixtures (e.g. Collop, McDowell, Lee, 2006;

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Imaged-based discrete element modeling of hot mix

2014-5-9  This paper presents the development of micro-mechanical discrete element model for hot mix asphalt (HMA) mixtures modified with carbon nanofibers using the advanced imaging techniques. Shape-structural model of two-phased HMA consisting of aggregate and matrix was generated using cluster of small discrete disk-shaped particles for each phase. Three contact models, shear and normal stiffness ...

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Discrete Element Modelling of Idealised Asphalt Mixture

2016-11-19  and modelling the deformation behaviour of asphalt mixtures. With the Discrete Element Method (DEM), it is possible to model materials that consist of individual particles where a particle may roll or slide relative to other particles. The DEM offers a means of gaining an insight into the micromechanics of the deformation process.

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Discrete element modeling of asphalt concrete:

A microfabric discrete element modeling (MDEM) approach is presented for modeling asphalt concrete microstructure. The technique is a straightforward extension of a traditional discrete element modeling (DEM) analysis, in which various material phases (e.g., aggregates, mastic) are modeled with clusters of very small, discrete elements.

Get Price

Discrete Element Modeling of Asphalt Concrete Cracking ...

Journal of Wuhan University of Technology-Mater. Sci. Ed. Dec. 2011 1215 Discrete Element Modeling of Asphalt Concrete Cracking Using a User-defi ned Three-dimensional

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Discrete Element Modelling of Asphalt Mixtures

2016-11-19  Discrete Element Modelling of Asphalt Mixtures Student: Wei Cai Supervisor: Prof. Glenn McDowell, Prof. Gordon Airey Introduction •The aim of this project is to use Discrete Element Modeling to investigate the deformation behavior of asphalt mixtures from a micro mechanical perspective.

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Discrete element modeling of asphalt concrete cracking ...

2011-12-20  We established a user-defined micromechanical model using discrete element method (DEM) to investigate the cracking behavior of asphalt concrete (AC). Using the “Fish” language provided in the particle flow code in 3-Demensions (PFC3D), the air voids and mastics in asphalt concrete were realistically built as two distinct phases. With the irregular shape of individual aggregate particles ...

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Three-dimensional discrete element modeling of asphalt ...

Abstract This paper investigated effects of element sizes in three-dimensional discrete element modeling of asphalt concrete. Asphalt concrete was considered as a two-phase composite of mineral aggregates larger than 2.36 mm and asphalt mastic. Even though asphalt mastic was a composite of fines, fine aggregates, asphalt, and air voids in the reality, it was considered as a homogenous media to ...

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Accelerated Discrete-Element Modeling of Asphalt-Based ...

This paper presents a methodology to reduce the computation time for discrete-element (DE) modeling of asphalt-based materials, based on the frequency-temperature superposition principle. Laboratory tests on the dynamic modulus of asphalt sand mastics and asphalt mixtures were conducted at temperatures of -5, 4, 13, and 21°C and frequencies of ...

Get Price

Micromechanical Discrete Element Modeling of Asphalt ...

This study aims to investigate the shear fatigue performance of asphalt mixture and factors influencing performance using a three-dimensional (3D) discrete element method (DEM) incorporated with the Burgers model. The repeated uniaxial penetration test (RUPT), which is a shear fatigue test method for asphalt mixtures, was succinctly described.

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Modelling asphalt mastic stiffness using discrete element ...

Modelling asphalt mastic stiffness using discrete element analysis and micromechanics-based models June 2005 International Journal of Pavement Engineering 6(2):137-146

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Discrete Element Modelling of Idealised Asphalt Mixture

2016-11-19  and modelling the deformation behaviour of asphalt mixtures. With the Discrete Element Method (DEM), it is possible to model materials that consist of individual particles where a particle may roll or slide relative to other particles. The DEM offers a means of gaining an insight into the micromechanics of the deformation process.

Get Price

VEJBELÆGNINGER Discrete Element Modelling of

2016-4-18  of asphalt mixture. In addition, part of the lab test data was obtained from University of California Pavement Research Center – Davis Berkeley during a three-month ex-change visit there. Discrete Element Modelling Asphalt mixture is a typical discontinuous multi-phase material, which mainly com-prises mastic, aggregates and air voids.

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Discrete element modeling of asphalt concrete:

A microfabric discrete element modeling (MDEM) approach is presented for modeling asphalt concrete microstructure. The technique is a straightforward extension of a traditional discrete element modeling (DEM) analysis, in which various material phases (e.g., aggregates, mastic) are modeled with clusters of very small, discrete elements.

Get Price

DISCRETE ELEMENT MODELING OF ASPHALT CONCRETE:

A microfabric discrete element modeling (MDEM) approach is presented for modeling asphalt concrete microstructure. The technique is a straightforward extension of a traditional discrete element modeling (DEM) analysis, in which various material phases (e.g., aggregates, mastic) are modeled with clusters of very small, discrete elements.

Get Price

Three-dimensional discrete element modeling of asphalt ...

Abstract This paper investigated effects of element sizes in three-dimensional discrete element modeling of asphalt concrete. Asphalt concrete was considered as a two-phase composite of mineral aggregates larger than 2.36 mm and asphalt mastic. Even though asphalt mastic was a composite of fines, fine aggregates, asphalt, and air voids in the reality, it was considered as a homogenous media to ...

Get Price

Discrete Element Modelling of Asphalt Mixtures

2016-11-19  Discrete Element Modelling of Asphalt Mixtures Student: Wei Cai Supervisor: Prof. Glenn McDowell, Prof. Gordon Airey Introduction •The aim of this project is to use Discrete Element Modeling to investigate the deformation behavior of asphalt mixtures from a micro mechanical perspective.

Get Price

Micromechanical Discrete Element Modeling of Asphalt ...

This study aims to investigate the shear fatigue performance of asphalt mixture and factors influencing performance using a three-dimensional (3D) discrete element method (DEM) incorporated with the Burgers model. The repeated uniaxial penetration test (RUPT), which is a shear fatigue test method for asphalt mixtures, was succinctly described.

Get Price

Modeling of asphalt by means of discrete element method ...

Discrete element method (DEM) is one type of numerical simulation method which allows the finite displacement and rotation of discrete particles, making it an excellent tool to simulate the complex micro interaction between aggregate particles within an asphalt mixture, [3],[4] .

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Discrete Element Modelling of Idealised Asphalt Mixture

2016-11-19  and modelling the deformation behaviour of asphalt mixtures. With the Discrete Element Method (DEM), it is possible to model materials that consist of individual particles where a particle may roll or slide relative to other particles. The DEM offers a means of gaining an insight into the micromechanics of the deformation process.

Get Price

VEJBELÆGNINGER Discrete Element Modelling of

2016-4-18  of asphalt mixture. In addition, part of the lab test data was obtained from University of California Pavement Research Center – Davis Berkeley during a three-month ex-change visit there. Discrete Element Modelling Asphalt mixture is a typical discontinuous multi-phase material, which mainly com-prises mastic, aggregates and air voids.

Get Price

Micromechanical Modeling of Asphalt Concrete Uniaxial ...

2018-6-14  Micromechanical Modeling of Asphalt Concrete Uniaxial Creep Using the Discrete Element Method Habtamu Melese Zelelew University of Minnesota Duluth , Duluth , MN , 55812 Phone: (218) 726-8427 E-mail: [email protected]

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Discrete Element Modeling of Constant Strain Rate ...

Discrete element modeling has been used to simulate constant strain rate compressive tests for an idealized asphalt mixture comprising approximately single-sized sand particles. A range of constant strain-rate compressive tests to failure have been undertaken in the laboratory and the axial stress-strain response has been carefully measured.

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