Abstract:Fracture tests were performed for epoxy resin asphalt mixes for steeldeck pavement using single edge notch beam specimen at -20,-10,0 and 10℃. Dynamic mechanical analysis(DMA) was implemented for epoxy resin asphalt at temperature range from -30 to 20℃, and SEM photos of section of tensile specimens were used to analyse microstructure of this material. Results show that fracture toughness of the epoxy resin asphalt mixes with crosslink degrees of 58.4%, 67.3%, 71.4% and 75.3% is reduced with increasing temperature, while fracture energy of that increases. Fracture toughness and fracture energy of four different crosslink degree epoxy resin asphalt mixes correlate with dynamic modulus of binder, or crosslink degree and temperature. Relationships are found between fracture parameters of mixes and dynamic modulus of binder, or crosslink degree and temperature. SEM photos show that the section of low crosslink degree epoxy resin asphalt is irregular, which could absorb more fracture energy.