KSCE Journal of Civil Engineering

, Volume 22, Issue 6, pp 2118–2125 | Cite as

Fatigue Performance Analysis of Pavements with RAP Using Viscoelastic Continuum Damage Theory

  • Yizhuang David Wang
  • Behrooz Keshavarzi
  • Youngsoo Richard Kim
Mechanistic Evaluation of Asphalt Paving Materials and Structures
  • 11 Downloads

Abstract

This paper presents the results of a study to evaluate the fatigue performance of pavements that contain RAP materials. The study is based on two different accelerated loading tests conducted in the United States. Each of these two projects has corresponding pavements with and without RAP mixtures that were constructed over the same aggregate base and subgrade and subjected to the same traffic loading and environmental conditions. The primary reason for selecting these two projects is that they exhibited opposite trends in a comparison of the fatigue cracking performance of their pavements with and without RAP. The asphalt mixtures in the test pavements were characterized using the simplified viscoelastic continuum damage model. The fatigue cracking performance of the pavements was then modeled using the characterized material properties, in situ pavement structures and traffic loads, and climate conditions in FlexPAVE™, a three-dimensional layered viscoelastic finite element program with moving load analysis. The resultant fatigue cracking performance predictions matched the field observations well. Both the simulation results and the field observations also showed that the fatigue cracking performance of the asphalt mixtures that

Keywords

Reclaimed Asphalt Pavement (RAP) fatigue cracking Simplified Viscoelastic Continuum Damage (S-VECD) model DR failure criterion Sapp FlexPAVE™ 

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References

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Copyright information

© Korean Society of Civil Engineers 2018

Authors and Affiliations

  • Yizhuang David Wang
    • 1
  • Behrooz Keshavarzi
    • 1
  • Youngsoo Richard Kim
    • 2
  1. 1.Dept. of Civil, Construction and Environmental EngineeringNorth Carolina State UniversityRaleigh, North CarolinaUSA
  2. 2.Alumni Association Distinguished Graduate Professor, Dept. of Civil, Construction and Environmental EngineeringNorth Carolina State UniversityRaleighUSA

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