Investigation on the high-temperature stability and fatigue behavior of cold mixed epoxy asphalt mixture with different gradations

• DOI: 10.1016/j.cscm.2023.e02694
• Publication Date: 2023-11-21T08:03:49Z
• Authors: Shuai Zhang; Henglong Zhang; Mingyu Zhou
• Keywords: Gradation

Cold mixed epoxy asphalt mixture (CMEAM) is widely applied on steel deck bridge pavements due to its excellent high temperature and fatigue resistance. However, previous studies investigated above two properties through destructive test or without considering water-damage factor, respectively, which far away from real servicing condition. To distinguish of EA-05 EA-10 (mixture with nominal maximum particle size 4.75 mm 9.5 mm), uniaxial static creep tests, dynamic modulus four-point bending beam were in this paper. At the same time, comprehensively acquire elastic, viscous-elastic plastic performance CMEAM, four kinds constitutive models also put forward. Results showed that seven-element viscous-elastic-plastic model has highest correlation coefficients proves there exists deformation CMEAM. Meanwhile, likely present while more show deformation. Dynamic among different gradation type at 40 °C not so apparent. But increase frequency testing temperature, difference would be clear. The middle most stability under load. In terms resistance damage control freeze-thaw treated samples, EA-05-U(the upper limit type) always takes first place lowest sensitivity change stress level water damage.