Virtual fabrication and computational simulation of asphalt concrete microstructure

Francisco Thiago Sacramento Aragão, Diego Arthur Hartmann, Abraham Ricardo Guerrero Pazos, Yong-Rak Kim

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

This study presents the development and verification of an in-house microstructure generator that can be used to fabricate virtual, two-dimensional microstructures of asphalt mixtures. The proposed methodology takes advantage of a modern image analysis system, i.e. Aggregate Image Measurement System 2, to obtain geometric characteristics of real aggregate particles. During the generation process, images of real aggregates are stored in a database and further positioned in the virtual microstructures in a way that the gradation, area fraction and orientation of the virtual aggregate skeleton closely reproduce properties of real asphalt concrete samples fabricated in the laboratory. To demonstrate the capabilities of the generator, a microstructural analysis procedure used to quantify key volumetric characteristics of virtual samples is first proposed and verified. Then, using the verified analysis methodology, microstructural characteristics of virtual samples are determined and compared to those of real specimens. To further demonstrate the applicability of the proposed methodology, dynamic modulus simulations of virtually generated samples of asphalt concrete are performed using the finite element software ABAQUS and considering different aggregate characteristics. The results obtained indicate that the proposed methodology can be used as an efficient tool to fabricate and analyse virtual microstructures of asphalt concrete mixtures. This, in turn, becomes an essential step for the improvement of the computational microstructural model under development by the authors, which aims to accurately predict the mechanical behaviour of asphalt mixtures from known constituent properties and geometric characteristics, and to provide significant savings in the time and cost required for laboratory testing of actual specimens.

Original languageEnglish (US)
Pages (from-to)859-870
Number of pages12
JournalInternational Journal of Pavement Engineering
Volume18
Issue number9
DOIs
StatePublished - Sep 2 2017

Fingerprint

Asphalt concrete
Fabrication
Microstructure
Asphalt mixtures
Concrete mixtures
ABAQUS
Image analysis
Testing
Costs

Keywords

  • Asphalt mixtures
  • computational microstructure modelling
  • finite element method
  • representative volume element
  • virtual microstructure generation

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Mechanics of Materials

Cite this

Virtual fabrication and computational simulation of asphalt concrete microstructure. / Aragão, Francisco Thiago Sacramento; Hartmann, Diego Arthur; Pazos, Abraham Ricardo Guerrero; Kim, Yong-Rak.

In: International Journal of Pavement Engineering, Vol. 18, No. 9, 02.09.2017, p. 859-870.

Research output: Contribution to journalArticle

Aragão, Francisco Thiago Sacramento ; Hartmann, Diego Arthur ; Pazos, Abraham Ricardo Guerrero ; Kim, Yong-Rak. / Virtual fabrication and computational simulation of asphalt concrete microstructure. In: International Journal of Pavement Engineering. 2017 ; Vol. 18, No. 9. pp. 859-870.
@article{cafb88c915d146ecb2c138feb44f5e9e,
title = "Virtual fabrication and computational simulation of asphalt concrete microstructure",
abstract = "This study presents the development and verification of an in-house microstructure generator that can be used to fabricate virtual, two-dimensional microstructures of asphalt mixtures. The proposed methodology takes advantage of a modern image analysis system, i.e. Aggregate Image Measurement System 2, to obtain geometric characteristics of real aggregate particles. During the generation process, images of real aggregates are stored in a database and further positioned in the virtual microstructures in a way that the gradation, area fraction and orientation of the virtual aggregate skeleton closely reproduce properties of real asphalt concrete samples fabricated in the laboratory. To demonstrate the capabilities of the generator, a microstructural analysis procedure used to quantify key volumetric characteristics of virtual samples is first proposed and verified. Then, using the verified analysis methodology, microstructural characteristics of virtual samples are determined and compared to those of real specimens. To further demonstrate the applicability of the proposed methodology, dynamic modulus simulations of virtually generated samples of asphalt concrete are performed using the finite element software ABAQUS and considering different aggregate characteristics. The results obtained indicate that the proposed methodology can be used as an efficient tool to fabricate and analyse virtual microstructures of asphalt concrete mixtures. This, in turn, becomes an essential step for the improvement of the computational microstructural model under development by the authors, which aims to accurately predict the mechanical behaviour of asphalt mixtures from known constituent properties and geometric characteristics, and to provide significant savings in the time and cost required for laboratory testing of actual specimens.",
keywords = "Asphalt mixtures, computational microstructure modelling, finite element method, representative volume element, virtual microstructure generation",
author = "Arag{\~a}o, {Francisco Thiago Sacramento} and Hartmann, {Diego Arthur} and Pazos, {Abraham Ricardo Guerrero} and Yong-Rak Kim",
year = "2017",
month = "9",
day = "2",
doi = "10.1080/10298436.2015.1066009",
language = "English (US)",
volume = "18",
pages = "859--870",
journal = "International Journal of Pavement Engineering",
issn = "1029-8436",
publisher = "Taylor and Francis Ltd.",
number = "9",

}

TY - JOUR

T1 - Virtual fabrication and computational simulation of asphalt concrete microstructure

AU - Aragão, Francisco Thiago Sacramento

AU - Hartmann, Diego Arthur

AU - Pazos, Abraham Ricardo Guerrero

AU - Kim, Yong-Rak

PY - 2017/9/2

Y1 - 2017/9/2

N2 - This study presents the development and verification of an in-house microstructure generator that can be used to fabricate virtual, two-dimensional microstructures of asphalt mixtures. The proposed methodology takes advantage of a modern image analysis system, i.e. Aggregate Image Measurement System 2, to obtain geometric characteristics of real aggregate particles. During the generation process, images of real aggregates are stored in a database and further positioned in the virtual microstructures in a way that the gradation, area fraction and orientation of the virtual aggregate skeleton closely reproduce properties of real asphalt concrete samples fabricated in the laboratory. To demonstrate the capabilities of the generator, a microstructural analysis procedure used to quantify key volumetric characteristics of virtual samples is first proposed and verified. Then, using the verified analysis methodology, microstructural characteristics of virtual samples are determined and compared to those of real specimens. To further demonstrate the applicability of the proposed methodology, dynamic modulus simulations of virtually generated samples of asphalt concrete are performed using the finite element software ABAQUS and considering different aggregate characteristics. The results obtained indicate that the proposed methodology can be used as an efficient tool to fabricate and analyse virtual microstructures of asphalt concrete mixtures. This, in turn, becomes an essential step for the improvement of the computational microstructural model under development by the authors, which aims to accurately predict the mechanical behaviour of asphalt mixtures from known constituent properties and geometric characteristics, and to provide significant savings in the time and cost required for laboratory testing of actual specimens.

AB - This study presents the development and verification of an in-house microstructure generator that can be used to fabricate virtual, two-dimensional microstructures of asphalt mixtures. The proposed methodology takes advantage of a modern image analysis system, i.e. Aggregate Image Measurement System 2, to obtain geometric characteristics of real aggregate particles. During the generation process, images of real aggregates are stored in a database and further positioned in the virtual microstructures in a way that the gradation, area fraction and orientation of the virtual aggregate skeleton closely reproduce properties of real asphalt concrete samples fabricated in the laboratory. To demonstrate the capabilities of the generator, a microstructural analysis procedure used to quantify key volumetric characteristics of virtual samples is first proposed and verified. Then, using the verified analysis methodology, microstructural characteristics of virtual samples are determined and compared to those of real specimens. To further demonstrate the applicability of the proposed methodology, dynamic modulus simulations of virtually generated samples of asphalt concrete are performed using the finite element software ABAQUS and considering different aggregate characteristics. The results obtained indicate that the proposed methodology can be used as an efficient tool to fabricate and analyse virtual microstructures of asphalt concrete mixtures. This, in turn, becomes an essential step for the improvement of the computational microstructural model under development by the authors, which aims to accurately predict the mechanical behaviour of asphalt mixtures from known constituent properties and geometric characteristics, and to provide significant savings in the time and cost required for laboratory testing of actual specimens.

KW - Asphalt mixtures

KW - computational microstructure modelling

KW - finite element method

KW - representative volume element

KW - virtual microstructure generation

UR - http://www.scopus.com/inward/record.url?scp=84937850182&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84937850182&partnerID=8YFLogxK

U2 - 10.1080/10298436.2015.1066009

DO - 10.1080/10298436.2015.1066009

M3 - Article

VL - 18

SP - 859

EP - 870

JO - International Journal of Pavement Engineering

JF - International Journal of Pavement Engineering

SN - 1029-8436

IS - 9

ER -