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Stiffening Thin Orthotropic Deck Structures with Thermoset Epoxy Asphalt for Improved Fatigue Resistance

  • Can Chen
  • Wolfgang O. Eisenhut
  • Kreisler Lau
  • Alex Ingram
  • John Bors
Conference paper
Part of the Sustainable Civil Infrastructures book series (SUCI)

Abstract

Early fatigue cracking of the pavement was frequently observed on bridges with relatively thin decks of orthotropic design, particularly in hot climates. This study investigates the possible use of epoxy asphalt to stiffen a thin steel deck and mitigate flexural and fatigue failure. Three different epoxy asphalt binders were used and two pavement mix designs were employed. The binder and pavement mixture properties were evaluated with direct tensile test and pull-off strength test on the binder, Marshall and flexural fatigue tests on paving mixture with steel plates. Test results show that a relatively high modulus binder and a relatively stiff pavement can effectively reduce the composite’s deflection and improve fatigue resistance. Binder adhesion to the aggregate in the composite seems to play a pivotal role and the strength of this bond may have a close relationship with the stiffness of the pavement.

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Copyright information

© Springer International Publishing AG, part of Springer Nature 2019

Authors and Affiliations

  • Can Chen
    • 1
  • Wolfgang O. Eisenhut
    • 1
  • Kreisler Lau
    • 1
  • Alex Ingram
    • 1
  • John Bors
    • 2
  1. 1.ChemCo Systems Inc.Redwood CityUSA
  2. 2.Auckland Harbour Bridge AllianceAucklandNew Zealand

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