Investigating the Functions of Particles in Packed Aggregate Blend using a Discrete Element Method

In asphalt mixture, aggregates account for up to 90% of the total volume and play an important role in the mechanical characteristics of asphalt mixture. The proportions of fine and coarse aggregates in gradation, as well as the function of aggregate particles, are important factors for the skeleton...

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Main Authors:	Yinghao Miao, Weixiao Yu, Yue Hou, Liyan Guo, Linbing Wang
Format:	Article
Language:	English
Published:	MDPI AG 2019-02-01
Series:	Materials
Subjects:	aggregate mixture discrete element method aggregate skeleton structure mechanical characteristic interaction forces
Online Access:	https://www.mdpi.com/1996-1944/12/4/556

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record_format	Article
spelling	doaj-f58de5eacc5648ceb0bfa4cdf38602012020-11-24T20:51:28ZengMDPI AGMaterials1996-19442019-02-0112455610.3390/ma12040556ma12040556Investigating the Functions of Particles in Packed Aggregate Blend using a Discrete Element MethodYinghao Miao0Weixiao Yu1Yue Hou2Liyan Guo3Linbing Wang4Beijing Key Laboratory of Traffic Engineering, Beijing University of Technology, Beijing 100124, ChinaBeijing Key Laboratory of Traffic Engineering, Beijing University of Technology, Beijing 100124, ChinaBeijing Key Laboratory of Traffic Engineering, Beijing University of Technology, Beijing 100124, ChinaBeijing Key Laboratory of Traffic Engineering, Beijing University of Technology, Beijing 100124, ChinaNational Center for Materials Service Safety, University of Science and Technology Beijing, Beijing 100083, ChinaIn asphalt mixture, aggregates account for up to 90% of the total volume and play an important role in the mechanical characteristics of asphalt mixture. The proportions of fine and coarse aggregates in gradation, as well as the function of aggregate particles, are important factors for the skeleton structure performance of asphalt mixtures. However, the existing asphalt mixture design methods are mostly based on empirical methods, where the non-uniformity and complexity of the composition of asphalt mixtures are not fully studied. In this study, the skeleton structure of aggregate mixture and function of aggregate are studied and analyzed using the Discrete Element Method (DEM). The Particle Flow 3D (PFC3D) DEM program is used to perform the numerical simulation. The average contact number and interaction forces by aggregate particles of different sizes are obtained and studied. The skeleton structure of aggregate mixture and function of aggregate particles are further analyzed from the meso-structural perspective.https://www.mdpi.com/1996-1944/12/4/556aggregate mixturediscrete element methodaggregate skeleton structuremechanical characteristicinteraction forces
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Yinghao Miao Weixiao Yu Yue Hou Liyan Guo Linbing Wang
spellingShingle	Yinghao Miao Weixiao Yu Yue Hou Liyan Guo Linbing Wang Investigating the Functions of Particles in Packed Aggregate Blend using a Discrete Element Method Materials aggregate mixture discrete element method aggregate skeleton structure mechanical characteristic interaction forces
author_facet	Yinghao Miao Weixiao Yu Yue Hou Liyan Guo Linbing Wang
author_sort	Yinghao Miao
title	Investigating the Functions of Particles in Packed Aggregate Blend using a Discrete Element Method
title_short	Investigating the Functions of Particles in Packed Aggregate Blend using a Discrete Element Method
title_full	Investigating the Functions of Particles in Packed Aggregate Blend using a Discrete Element Method
title_fullStr	Investigating the Functions of Particles in Packed Aggregate Blend using a Discrete Element Method
title_full_unstemmed	Investigating the Functions of Particles in Packed Aggregate Blend using a Discrete Element Method
title_sort	investigating the functions of particles in packed aggregate blend using a discrete element method
publisher	MDPI AG
series	Materials
issn	1996-1944
publishDate	2019-02-01
description	In asphalt mixture, aggregates account for up to 90% of the total volume and play an important role in the mechanical characteristics of asphalt mixture. The proportions of fine and coarse aggregates in gradation, as well as the function of aggregate particles, are important factors for the skeleton structure performance of asphalt mixtures. However, the existing asphalt mixture design methods are mostly based on empirical methods, where the non-uniformity and complexity of the composition of asphalt mixtures are not fully studied. In this study, the skeleton structure of aggregate mixture and function of aggregate are studied and analyzed using the Discrete Element Method (DEM). The Particle Flow 3D (PFC3D) DEM program is used to perform the numerical simulation. The average contact number and interaction forces by aggregate particles of different sizes are obtained and studied. The skeleton structure of aggregate mixture and function of aggregate particles are further analyzed from the meso-structural perspective.
topic	aggregate mixture discrete element method aggregate skeleton structure mechanical characteristic interaction forces
url	https://www.mdpi.com/1996-1944/12/4/556
work_keys_str_mv	AT yinghaomiao investigatingthefunctionsofparticlesinpackedaggregateblendusingadiscreteelementmethod AT weixiaoyu investigatingthefunctionsofparticlesinpackedaggregateblendusingadiscreteelementmethod AT yuehou investigatingthefunctionsofparticlesinpackedaggregateblendusingadiscreteelementmethod AT liyanguo investigatingthefunctionsofparticlesinpackedaggregateblendusingadiscreteelementmethod AT linbingwang investigatingthefunctionsofparticlesinpackedaggregateblendusingadiscreteelementmethod
_version_	1716802216608661504

Investigating the Functions of Particles in Packed Aggregate Blend using a Discrete Element Method

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