DEM-based stress transmission in asphalt mixture skeleton filling system

Chao Xing; Bo Liu; Zhiqi Sun; Yiqiu Tan; Xueyan Liu; Changhong Zhou

doi:10.1016/j.conbuildmat.2022.128956

DEM-based stress transmission in asphalt mixture skeleton filling system

Chao Xing, Bo Liu, Zhiqi Sun^*, Yiqiu Tan, Xueyan Liu, Changhong Zhou

^*Corresponding author for this work

Pavement Engineering

Research output: Contribution to journal › Article › Scientific › peer-review

7 Citations (Scopus)

15 Downloads (Pure)

Abstract

Asphalt mixture is a skeleton filling system consisting of aggregate, asphalt, and mineral powder. High performance asphalt mixture design is directly affected by internal stress transmission of skeleton filling system. In this paper, the discrete element method based on digital image was employed to study the stress transmission. By analyzing the effect of skeleton structure on the contact force between aggregate and mortar, it is concluded that the skeleton aggregate in the asphalt mixture is the main stress transmission medium. The lower the degree of disruption, the higher the contact force of skeleton aggregate. At the same time, the variation coefficient of contact force of asphalt mortar with low filling coefficient is larger and the localization phenomenon is more serious. By analyzing the effect of mortar properties on the contact force between aggregate and mortar, it is concluded that the lower the modulus of asphalt mortar, the higher the degree of localization of contact force and the more likely to have local damage.

Original language	English
Article number	128956
Number of pages	13
Journal	Construction and Building Materials
Volume	351
DOIs	https://doi.org/10.1016/j.conbuildmat.2022.128956
Publication status	Published - 2022

Bibliographical note

Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care
Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

Keywords

Asphalt mixtures
Contact force transmission
DEM
Mesostructure
Skeleton filling system

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10.1016/j.conbuildmat.2022.128956

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title = "DEM-based stress transmission in asphalt mixture skeleton filling system",

abstract = "Asphalt mixture is a skeleton filling system consisting of aggregate, asphalt, and mineral powder. High performance asphalt mixture design is directly affected by internal stress transmission of skeleton filling system. In this paper, the discrete element method based on digital image was employed to study the stress transmission. By analyzing the effect of skeleton structure on the contact force between aggregate and mortar, it is concluded that the skeleton aggregate in the asphalt mixture is the main stress transmission medium. The lower the degree of disruption, the higher the contact force of skeleton aggregate. At the same time, the variation coefficient of contact force of asphalt mortar with low filling coefficient is larger and the localization phenomenon is more serious. By analyzing the effect of mortar properties on the contact force between aggregate and mortar, it is concluded that the lower the modulus of asphalt mortar, the higher the degree of localization of contact force and the more likely to have local damage.",

keywords = "Asphalt mixtures, Contact force transmission, DEM, Mesostructure, Skeleton filling system",

author = "Chao Xing and Bo Liu and Zhiqi Sun and Yiqiu Tan and Xueyan Liu and Changhong Zhou",

note = "Green Open Access added to TU Delft Institutional Repository {\textquoteleft}You share, we take care!{\textquoteright} – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. ",

year = "2022",

doi = "10.1016/j.conbuildmat.2022.128956",

language = "English",

volume = "351",

journal = "Construction and Building Materials",

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TY - JOUR

T1 - DEM-based stress transmission in asphalt mixture skeleton filling system

AU - Xing, Chao

AU - Liu, Bo

AU - Sun, Zhiqi

AU - Tan, Yiqiu

AU - Liu, Xueyan

AU - Zhou, Changhong

N1 - Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

PY - 2022

Y1 - 2022

N2 - Asphalt mixture is a skeleton filling system consisting of aggregate, asphalt, and mineral powder. High performance asphalt mixture design is directly affected by internal stress transmission of skeleton filling system. In this paper, the discrete element method based on digital image was employed to study the stress transmission. By analyzing the effect of skeleton structure on the contact force between aggregate and mortar, it is concluded that the skeleton aggregate in the asphalt mixture is the main stress transmission medium. The lower the degree of disruption, the higher the contact force of skeleton aggregate. At the same time, the variation coefficient of contact force of asphalt mortar with low filling coefficient is larger and the localization phenomenon is more serious. By analyzing the effect of mortar properties on the contact force between aggregate and mortar, it is concluded that the lower the modulus of asphalt mortar, the higher the degree of localization of contact force and the more likely to have local damage.

AB - Asphalt mixture is a skeleton filling system consisting of aggregate, asphalt, and mineral powder. High performance asphalt mixture design is directly affected by internal stress transmission of skeleton filling system. In this paper, the discrete element method based on digital image was employed to study the stress transmission. By analyzing the effect of skeleton structure on the contact force between aggregate and mortar, it is concluded that the skeleton aggregate in the asphalt mixture is the main stress transmission medium. The lower the degree of disruption, the higher the contact force of skeleton aggregate. At the same time, the variation coefficient of contact force of asphalt mortar with low filling coefficient is larger and the localization phenomenon is more serious. By analyzing the effect of mortar properties on the contact force between aggregate and mortar, it is concluded that the lower the modulus of asphalt mortar, the higher the degree of localization of contact force and the more likely to have local damage.

KW - Asphalt mixtures

KW - Contact force transmission

KW - DEM

KW - Mesostructure

KW - Skeleton filling system

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U2 - 10.1016/j.conbuildmat.2022.128956

DO - 10.1016/j.conbuildmat.2022.128956

M3 - Article

AN - SCOPUS:85136471379

SN - 0950-0618

VL - 351

JO - Construction and Building Materials

JF - Construction and Building Materials

M1 - 128956

ER -

DEM-based stress transmission in asphalt mixture skeleton filling system

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