Mechanism of overlay reinforcement to retard reflective cracking under moving vehicular loading

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

Abstract

Interlayer systems have been incorporated into hot-mix asphalt (HMA) overlays to reduce reflective cracking development. This paper describes an investigation of the reflective cracking mechanism and the ability of steel reinforcement netting interlayer to retard reflective cracking due to vehicular loading utilizing three-dimensional finite element method and the ABAQUS cohesive zone model. For HMA overlay that consists of wearing surface and leveling binder, it was found that reflective cracking occurs under the wheel path and at the lower one third of the leveling binder layer and propagates transversely. The study found that steel reinforcement netting placed between the HMA overlay and existing PCC pavement delays reflective crack initiation time by seven folds. Also, the rate of fractured area by reflective cracking in the reinforced overlay is 4.7 times lower than that of the unreinforced overlay. This study concludes that steel reinforcement netting is an efficient interlayer system to delay the initiation and propagation of reflective cracking given that it is properly installed.

Original languageEnglish (US)
Title of host publicationPavement Cracking
Subtitle of host publicationMechanisms, Modeling, Detection, Testing and Case Histories
Pages563-573
Number of pages11
StatePublished - Dec 1 2008
Event6th RILEM International Conference on Cracking in Pavements - Chicago, IL, United States
Duration: Jun 16 2008Jun 18 2008

Publication series

NamePavement Cracking: Mechanisms, Modeling, Detection, Testing and Case Histories

Other

Other6th RILEM International Conference on Cracking in Pavements
CountryUnited States
CityChicago, IL
Period6/16/086/18/08

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Architecture

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  • Cite this

    Baek, X., & Al-Qadi, I. L. (2008). Mechanism of overlay reinforcement to retard reflective cracking under moving vehicular loading. In Pavement Cracking: Mechanisms, Modeling, Detection, Testing and Case Histories (pp. 563-573). (Pavement Cracking: Mechanisms, Modeling, Detection, Testing and Case Histories).