Asphalt pavement aging and temperature dependent properties through a functionally graded viscoelastic model, Part-I: Development, implementation and verification

Eshan V. Dave, Glaucio H. Paulino, William G. Buttlar

Research output: Chapter in Book/Report/Conference proceedingConference contribution

7 Scopus citations

Abstract

Asphalt concrete pavements are inherently graded viscoelastic structures. Oxidative aging of asphalt binder and temperature cycling due to climatic conditions are the major cause of such graded non-homogeneity. Current pavement analysis and simulation procedures either ignore or use a layered approach to account for non-homogeneities. For instance, the recently developed Mechanistic-Empirical Design Guide (MEPDG) [1], which was recently approved by the American Association of State Highway and Transportation Officials (AASHTO), employs a layered analysis approach to simulate the effects of material aging gradients through the depth of the pavement as a function of pavement age. In the current work, a graded viscoelastic model has been implemented within a numerical framework for the simulation of asphalt pavement responses under various loading conditions. A functionally graded generalized Maxwell model has been used in the development of a constitutive model for asphalt concrete to account for aging and temperature induced property gradients. The associated finite element implementation of the constitutive model incorporates the generalized iso-parametric formulation (GIF) proposed by Kim and Paulino [2], which leads to the graded viscoelastic elements proposed in this work. A solution, based on the correspondence principle, has been implemented in conjunction with the collocation method, which leads to an efficient inverse numerical transform procedure. This work is the first of a two-part paper and focuses on the development, implementation and verification of the aforementioned analysis approach for functionally graded viscoelastic systems. The follow-up paper focuses on the application of this approach.

Original languageEnglish (US)
Title of host publicationMultiscale, Multifunctional and Functionally Graded Materials
PublisherTrans Tech Publications Ltd
Pages47-52
Number of pages6
ISBN (Print)0878493077, 9780878493074
DOIs
StatePublished - 2010
Externally publishedYes
Event10th International Symposium on Multiscale, Multifunctional and Functionally Graded Materials, MM and FGMs - Sendai, Japan
Duration: Sep 22 2008Sep 25 2008

Publication series

NameMaterials Science Forum
Volume631-632
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Conference

Conference10th International Symposium on Multiscale, Multifunctional and Functionally Graded Materials, MM and FGMs
Country/TerritoryJapan
CitySendai
Period9/22/089/25/08

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Keywords

  • Correspondence principle
  • Finite-element method
  • Functionally graded materials
  • Numerical simulations
  • Viscoelasticity

Fingerprint

Dive into the research topics of 'Asphalt pavement aging and temperature dependent properties through a functionally graded viscoelastic model, Part-I: Development, implementation and verification'. Together they form a unique fingerprint.

Cite this