Discrete Element Modelling of Influences of Grain Shape and Angularity on Performance of Granular Mixes for Asphalts

被引：28

作者：

Dondi, Giulio ^{[1
]}

Simone, Andrea ^{[1
]}

Vignali, Valeria ^{[1
]}

Manganelli, Giulia ^{[1
]}

机构：

[1] Univ Bologna, DICAM Dept, I-40136 Bologna, Italy

来源：

SIIV-5TH INTERNATIONAL CONGRESS - SUSTAINABILITY OF ROAD INFRASTRUCTURES 2012 | 2012年 / 53卷

关键词：

Discrete element modelling; triaxial test; aggregate shape; particle interaction; asphalt; PARTICLES;

D O I：

10.1016/j.sbspro.2012.09.891

中图分类号：

U [交通运输];

学科分类号：

08 ; 0823 ;

摘要：

The greater part of asphalt mixtures is composed of aggregates. This means that particular features, such as shape and angularity, are the primary factors that affect the development of the mechanical performance of asphalt pavements. In order to investigate the combined effect of grain shape and angularity on the packing and stability of an aggregate's assembly for asphalt mixes, the authors have performed an experimental program using 3D Discrete Element Method. The results obtained from triaxial tests and from statistical analysis of the distribution of particle-particle contact forces show that the grain shape and angularity significantly affect the assembly behaviour. (C) 2012 The Authors. Published by Elsevier Ltd. Selection and/or peer-review under responsibility of SIIV2012 Scientific Committee

引用

页码：399 / 409

页数：11

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