discrete element method (dem) analyses of hotmix asphalt
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discrete element method (dem) analyses of hotmix asphalt.

Discrete Element Method (DEM) Analyses of Hot-Mix Asphalt ...

Asphalt mixture compaction is an important procedure of asphalt mixture construction and can significantly affect the performance of asphalt pavement. In this paper, an open source DEM code was applied to simulate the compaction of hot-mix asphalt (HMA) with the Superpave gyratory compactor. The asphalt mixture compaction process, air voids distribution, internal coarse aggregate structure ...

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Discrete Element Method (DEM) Analyses for Hot-Mix Asphalt ...

Jun 09, 2011  Discrete Element Method (DEM) is a discontinuum analysis method, which can simulate the deformation process of joint systems or discrete particle assembly under quasi-static and dynamic condition. Therefore, it can overcome the shortcomings of FEM and is a more effective tool than FEM to simulate asphalt mixture compaction.

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Discrete Element Method (DEM) Analyses of Hot-Mix Asphalt ...

Discrete Element Method (DEM) Analyses of Hot-Mix Asphalt (HMA) Mixtures Compaction and Internal Structure January 2013 Advanced Materials Research 639-640(1):1287-1294

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University of Tennessee, Knoxville TRACE: Tennessee ...

I am submitting herewith a dissertation written by Jingsong Chen entitled “Discrete Element Method (DEM) Analyses for Hot-Mix Asphalt (HMA) Mixture Compaction.” I have examined the final electronic copy of this dissertation for form and content and recommend that it be accepted in partial fulfillment of the requirements for the degree of

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Numerical Simulation of HMA Compaction Using Discrete ...

asphalt mix design, it is highly dependent on engineers’ experience to select a good aggregate blend and the process is time-consuming and requires significant human and materials resources. In this study, discrete element method (DEM) was used to simulate the compaction of hot-mix asphalt (HMA) with the Superpave gyratory compactor (SGC).

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Imaged-based discrete element modeling of hot mix asphalt ...

May 09, 2014  10%  You Z (2003) Development of a micromechanical modeling approach to predict asphalt mixture stiffness using the discrete element method. Doctoral Dissertation, University of Illinois at Urbana-Champaign, Urbana. 5. Buttlar WG, You Z (2001) Discrete element modeling of asphalt concrete: a micro-fabric approach. Transp Res Rec 1757:111–118

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New discrete element framework for modelling asphalt ...

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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(PDF) Air-Void Distribution Analysis of Asphalt Mixture ...

An open source discrete element method (DEM) code was em- ployed to simulate asphalt mixture gyratory and vibratory compac- tions so that the air void distribution with in compacted asphalt

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DEM Simulation of Laboratory Compaction of Asphalt ...

Mar 03, 2015  With its inherent advantages, the discrete element method (DEM) is a more suitable tool than FEM to simulate asphalt mixture compaction. In this study, an open source DEM code was applied to simulate three types of hot-mix asphalt (HMA) compaction for the first time: superpave gyratory compaction, vibration compaction, and kneading compaction.

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Discrete Element Analysis of the Influences of Aggregate ...

Jan 01, 2010  This paper introduces an approach that combines the discrete element method (DEM) and image processing techniques to analyze the combined effects of aggregate gradation, shape, stiffness, and strength on HMA resistance to fracture. The DEM input parameters were determined based on measuring aggregate and HMA properties.

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Image Base Discrete Element Modeling of Hot mix Asphlt ...

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 ...

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DEM Simulation of Laboratory Compaction of Asphalt ...

Mar 03, 2015  With its inherent advantages, the discrete element method (DEM) is a more suitable tool than FEM to simulate asphalt mixture compaction. In this study, an open source DEM code was applied to simulate three types of hot-mix asphalt (HMA) compaction for the first time: superpave gyratory compaction, vibration compaction, and kneading compaction.

Get Price

Imaged-based discrete element modeling of hot mix asphalt ...

May 09, 2014  You Z (2003) Development of a micromechanical modeling approach to predict asphalt mixture stiffness using the discrete element method. Doctoral Dissertation, University of Illinois at Urbana-Champaign, Urbana. 5. Buttlar WG, You Z (2001) Discrete element modeling of asphalt concrete: a micro-fabric approach. Transp Res Rec 1757:111–118

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Modeling viscoelastic behavior of Hot Mix Asphalt (HMA ...

In this paper, TRUBAL based on Discrete Element Method (DEM) was modified to include the effects of asphalt binder between the granular aggregates. Viscoelastic (Burgers) elements were added in the normal and tangential directions between the particles.

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Micromechanical Simulation of Hot Mix Asphalt Journal of ...

A model based on the discrete element method (DEM), ASBAL, was developed by modifying the TRUBAL program to simulate hot mix asphalt (HMA). To represent asphalt cement, several viscoelastic elements (i.e., Maxwell, Kelvin-Voigt, and Burger's elements) were considered. The research results from the Strategic Highway Research Program (SHRP) were ...

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Update on the Discrete Element Method in Engineering

Figure 1. Particulate materials and construction of asphalt mixture Discrete Element Method Cundall [16] introduced discrete element methods (DEM) for the analysis of rock-mechanics problems and since then it has been developed in granular material analysis [17-32]. The original application of this method was to investigate the behavior of

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Three-dimensional discrete element models for asphalt mixtures

Three-dimensional discrete element models for asphalt mixtures. Download. Related Papers. Prediction of Creep Stiffness of Asphalt Mixture with Micromechanical Finite-Element and Discrete-Element Models. By Zhanping You. Micromechanical finite element modeling of moisture damage in bituminous composite materials.

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Determination of Parameters of the Discrete Element Bond ...

May 02, 2019  A discrete element method (DEM) has widely been used to simulate asphalt mixture characteristics, and DEM models can consider the effect of aggregate gradation and interaction between particles. However, proper selection of model parameters is crucial to obtain convincing results from DEM-based simulations. This paper presents a method to appropriately determine the mechanical

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Micromechanical simulation of porous asphalt mixture ...

Analysis of Hot-Mix Asphalt Lab Compactability Using Lab Compaction Parameters and Mix Characteristics Transp. Res. Rec. , 2057 ( 1 ) ( 2008 ) , pp. 89 - 98 , 10.3141/2057-11 CrossRef View Record in Scopus Google Scholar

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Mixing uniformity of particles in a double barrel with ...

In this paper, discrete element method (DEM) is utilized to investigate the flow pattern of particles and the mixing performance of the double-screw conical mixer with particle number from 0.5 to ...

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Numerical Studies on Asphalt Concretes SpringerLink

Computational modeling of asphalt mixtures is discussed in this chapter using different methods of DEM (discrete element method), FEM (finite element method) and XFEM (extended finite element...

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Pavement Analysis and Design by Multiphysics ...

The objective of this study is to rebuild the virtual asphalt mixtures rapidly and precisely based on the Discrete-Element Method (DEM). To achieve this, with the help of AIMS scanning technology, an algorithm was designed for modeling coarse aggregates, asphalt mastic, and voids.

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Study on Creep Behavior Of Asphalt Mixture Based on ...

aggregate gradation, shape, stiffness, and strength on hot-mix asphalt were analysed by the discrete element method and image processing techniques (Mahmoud, Masad, Nazarian, 2010). The microstructure of asphalt concretes was captured by using X-Ray Computed Tomography (CT) and using the Discrete Element Method (DEM). The viscoelastic

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A Comparison of Two-Dimensional and Three-Dimensional ...

however, most of the early studies were based on two-dimensional finite element method (FEM) and discrete element method (DEM). Masad et al. (2001) studied the strain distribution in asphalt concretes by using micromechanical analysis, FEM, and experimental measurements. Papagiannakis et al. (2002) explored a method by

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DEM Simulation of Laboratory Compaction of Asphalt ...

With its inherent advantages, the discrete element method (DEM) is a more suitable tool than FEM to simulate asphalt mixture compaction. In this study, an open source DEM code was applied to simulate three types of hot-mix asphalt (HMA) compaction for the first time: superpave gyratory compaction, vibration compaction, and kneading compaction.

Get Price

Modeling viscoelastic behavior of Hot Mix Asphalt (HMA ...

In this paper, TRUBAL based on Discrete Element Method (DEM) was modified to include the effects of asphalt binder between the granular aggregates. Viscoelastic (Burgers) elements were added in the normal and tangential directions between the particles.

Get Price

Discrete Element Analysis of the Influences of Aggregate ...

Discrete Element Analysis of the Influences of Aggregate Properties and Internal Structure on Fracture in Asphalt Mixtures. Increased loads on hot-mix asphalt (HMA) pavements have necessitated the development of new-generation asphalt mixture designs that rely on stone-on-stone contact among coarse aggregates in resisting and distributing applied loads.

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Application of discrete element method to Superpave ...

In this study, the discrete element method (DEM) was used to simulate the compaction of hot-mix asphalt (HMA) with the Superpave gyratory compactor (SGC). The open source DEM code, YADE, was modified and implemented with C++programming language to conduct virtual SGC compaction.

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Micromechanical Modeling of Hot-Mix Asphalt Mixtures by ...

This study focused on the application of a clustered micromechanical discrete-element modeling (DEM) technique to predict the uniaxial compression dynamic modulus of hot-mix asphalt (HMA) mixtures. Six HMA mixtures were made with two types of asphalts and two

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Update on the Discrete Element Method in Engineering

Figure 1. Particulate materials and construction of asphalt mixture Discrete Element Method Cundall [16] introduced discrete element methods (DEM) for the analysis of rock-mechanics problems and since then it has been developed in granular material analysis [17-32]. The original application of this method was to investigate the behavior of

Get Price

Micromechanical Modeling of the Viscoelastic Behavior of ...

Mar 02, 2007  This paper presents a methodology for analyzing the viscoelastic response of asphalt mixtures using the discrete-element method (DEM). Two unmodified (neat) and seven modified binders were mixed with the same aggregate blend in order to prepare the nine hot mix asphalt (HMA) mixtures used in this study.

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Air-Void Distribution Analysis of Asphalt Mixture Using ...

Air void distribution within an asphalt mixture specimen is related to several factors, such as compaction effort, method of compaction (equipment), and aggregate gradation. In this study, virtual digital specimens generated by an open source discrete element method (DEM) program were utilized to investigate the effect of compaction factors on ...

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Numerical Studies on Asphalt Concretes SpringerLink

Computational modeling of asphalt mixtures is discussed in this chapter using different methods of DEM (discrete element method), FEM (finite element method) and XFEM (extended finite element...

Get Price

Altair EDEM Applications

EDEM software, powered by the Discrete Element Method (DEM), accurately simulates the behavior of rocks, soils, gravel, grains, tablets and powders and their interaction with equipment during a range of operation and process conditions. EDEM is used globally in all industries that handle or process bulk and granular materials, from heavy equipment and off-road, to mining, metals, as well as ...

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Investigation of asphalt mixture permanent deformation ...

Feb 22, 2021  Micromechanical modeling of asphalt concrete uniaxial creep using the discrete element method Road Mater. Pavement Des. , 11 ( 3 ) ( 2010 ) , pp. 613 - 632 , 10.1080/14680629.2010.9690296

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Numerical analysis of asphalt mixture and comparison with ...

(2014). Numerical analysis of asphalt mixture and comparison with physical Marshall test. Journal of Civil Engineering and Management: Vol. 20, No. 4, pp. 570-580.

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Discrete Element Modelling of Influences of Grain Shape ...

cracks. Mahmoud et al. (2010) introduced an approach that combined the discrete element method with image processing techniques in order to analyze the combined effects of aggregate gradation, shape, stiffness and strength on hot-mix asphalt’s resistance to fracture [10]. The results showed that the required aggregate strength

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SIMULATION OF THE MICROMECHANICAL BEHAVIOR OF ASPHALT ...

The effect of the aggregate fines on the macromechanical behavior of asphalt mastics is studied through the generation of discrete element models that contain different percentages of soft and stiff particles. The temperature dependency of the asphalt binder is included in the analysis through the modification of the stiffness of the soft ...

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