Mechanistic-empirical analysis of asphalt pavement fatigue cracking under vehicular dynamic loads

Jingnan Zhao, Hao Wang

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Vehicle-pavement interaction causes dynamic loads and accelerate pavement deterioration. The study provides a methodology to consider dynamic loads in mechanistic-empirical (M-E) pavement design and analysis. The dynamic load coefficients were found increasing as pavement roughness increased or axle loads decreased. The impulse response method was adopted to calculate tensile strains of asphalt layer under random loads. The relative ratios of fatigue life due to dynamic loads were calculated and fitted as a function of axle type, load magnitude, and international roughness index (IRI). The accumulative fatigue damage ratio between dynamic and static loads was proposed for M-E pavement analysis.

Original languageEnglish (US)
Article number122877
JournalConstruction and Building Materials
Volume284
DOIs
StatePublished - May 17 2021

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science(all)

Keywords

  • Asphalt pavement
  • Dynamic loads
  • Fatigue cracking
  • Mechanistic-empirical pavement analysis
  • Pavement surface roughness

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