Rutting and cracking modeling of asphalt pavements considering nonlinear viscoelasticity and cohesive zone fracture

Soohyok Im, Hoki Ban, Yong Rak Kim

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

1 Scopus citations

Abstract

This study investigates the mechanical impact of the constitutive material behavior of asphalt layer (both nonlinear viscoelastic and fracture) for the prediction of pavement performance. In this study, a cohesive zone model was utilized to consider the fracture behavior of an asphalt mixture. The Semi-Circular Bend (SCB) fracture test was conducted to characterize the fracture properties of the asphalt mixture. Fracture properties were then used to simulate mechanical responses of pavement structures. In addition, Schapery's nonlinear viscoelastic constitutive model was implemented into the commercial finite element software ABAQUS via a user defined subroutine (user material, or UMAT) to analyze asphalt pavements subjected to heavy truck loads. A series of creep-recovery tests were conducted at various stress levels to obtain the stress-dependent viscoelastic material properties of the asphalt mixture. Utilizing the derived viscoelastic and fracture properties and the UMAT code, a typical pavement structure was modeled to investigate the effect of nonlinear viscoelasticity and fracture damage due to repeated heavy truck loads. Mechanical responses from two-dimensional finite element simulations of the pavement structure are presented and discussed.

Original languageEnglish (US)
Title of host publicationAsphalt Pavements - Proceedings of the International Conference on Asphalt Pavements, ISAP 2014
PublisherTaylor and Francis - Balkema
Pages775-783
Number of pages9
ISBN (Print)9781138027121
DOIs
StatePublished - 2014
Event12th International Conference on Asphalt Pavements, ISAP 2014 - Raleigh, NC, United States
Duration: Jun 1 2014Jun 5 2014

Publication series

NameAsphalt Pavements - Proceedings of the International Conference on Asphalt Pavements, ISAP 2014
Volume1

Other

Other12th International Conference on Asphalt Pavements, ISAP 2014
CountryUnited States
CityRaleigh, NC
Period6/1/146/5/14

Keywords

  • Asphalt pavement
  • Cohesive zone fracture
  • Cracking
  • Nonlinear viscoelasticity
  • Rutting

ASJC Scopus subject areas

  • Building and Construction
  • Architecture

Fingerprint Dive into the research topics of 'Rutting and cracking modeling of asphalt pavements considering nonlinear viscoelasticity and cohesive zone fracture'. Together they form a unique fingerprint.

  • Cite this

    Im, S., Ban, H., & Kim, Y. R. (2014). Rutting and cracking modeling of asphalt pavements considering nonlinear viscoelasticity and cohesive zone fracture. In Asphalt Pavements - Proceedings of the International Conference on Asphalt Pavements, ISAP 2014 (pp. 775-783). (Asphalt Pavements - Proceedings of the International Conference on Asphalt Pavements, ISAP 2014; Vol. 1). Taylor and Francis - Balkema. https://doi.org/10.1201/b17219-96