Abstract
AbstractCompared with the general pavement, the steel bridge deck pavement endure much larger deform and higher temperature. Epoxy asphalts were used to prepare modified asphalt concrete for steel bridge deck paving. The effects of epoxy resin contents on the fatigue life and creep properties of epoxy asphalt mixture were investigated in this study. The fatigue properties of epoxy asphalt mixtures were studied by the indirect tension fatigue test at different stress. A static creep test with a loading and recovery period was conducted on the asphalt mixture. The results showed that the fatigue life and recovery elasticity of asphalt mixtures with epoxy resins was large, which indicated that the fatigue property could be improved by epoxy resin. Compared with control asphalt, epoxy asphalt showed better resistance to deformation and recovery performance. Epoxy resin has caused a dramatic ascent in the creep stiffness modulus of asphalt mixture. And Burgers model can describe the creep performance of epoxy asphalt. Based on the obtained results, epoxy asphalt mixtures had decrease in permanent deformation and increase in fatigue life. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011
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