Investigation of Fracture Behavior of Recycled Asphalt Mixtures Using a Discrete Element Computational Model

Meng Xu; Jia Liang Le; Tianhao Yan; Mugurel Turos; Mihai Marasteanu; Decheng Feng

doi:10.1007/978-3-030-46455-4_152

Investigation of Fracture Behavior of Recycled Asphalt Mixtures Using a Discrete Element Computational Model

Meng Xu, Jia Liang Le, Tianhao Yan, Mugurel Turos, Mihai Marasteanu, Decheng Feng

Civil, Environmental, and Geo- Engineering

Research output: Chapter in Book/Report/Conference proceeding › Chapter

1 Scopus citations

Abstract

A discrete element computational model is used to simulate the fracture behavior of asphalt mixtures, containing different RAP proportions, at low temperatures. In this model, coarse aggregates are explicitly represented by rigid spherical particles. The bonds that connect these particles represent the fine aggregate matrix (FAM), which is defined as the combination of asphalt binder and fine aggregates. The model is used to investigate the fracture behavior of four asphalt mixtures with different RAP contents. Semi-circular bend (SCB) fracture tests are performed on the asphalt mixtures and bending beam rheometer (BBR) strength tests are performed on FAM at low temperatures.

Original language	English (US)
Title of host publication	RILEM Bookseries
Publisher	Springer Science and Business Media B.V.
Pages	1197-1204
Number of pages	8
DOIs	https://doi.org/10.1007/978-3-030-46455-4_152
State	Published - 2022

Publication series

Name	RILEM Bookseries
Volume	27
ISSN (Print)	2211-0844
ISSN (Electronic)	2211-0852

Bibliographical note

Publisher Copyright:
© 2022, The Author(s), under exclusive license to Springer Nature Switzerland AG.

Keywords

Discrete element method
Fine aggregate matrix
Fracture energy

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abstract = "A discrete element computational model is used to simulate the fracture behavior of asphalt mixtures, containing different RAP proportions, at low temperatures. In this model, coarse aggregates are explicitly represented by rigid spherical particles. The bonds that connect these particles represent the fine aggregate matrix (FAM), which is defined as the combination of asphalt binder and fine aggregates. The model is used to investigate the fracture behavior of four asphalt mixtures with different RAP contents. Semi-circular bend (SCB) fracture tests are performed on the asphalt mixtures and bending beam rheometer (BBR) strength tests are performed on FAM at low temperatures.",

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AU - Marasteanu, Mihai

AU - Feng, Decheng

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AB - A discrete element computational model is used to simulate the fracture behavior of asphalt mixtures, containing different RAP proportions, at low temperatures. In this model, coarse aggregates are explicitly represented by rigid spherical particles. The bonds that connect these particles represent the fine aggregate matrix (FAM), which is defined as the combination of asphalt binder and fine aggregates. The model is used to investigate the fracture behavior of four asphalt mixtures with different RAP contents. Semi-circular bend (SCB) fracture tests are performed on the asphalt mixtures and bending beam rheometer (BBR) strength tests are performed on FAM at low temperatures.

KW - Discrete element method

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Investigation of Fracture Behavior of Recycled Asphalt Mixtures Using a Discrete Element Computational Model

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