The Optimal Preparation Process of Hot Mix Epoxy Modified Asphalt
The orthogonal experiment are carried out to determine the optimal preparation process for hot-mixed epoxy-modified asphalt,a four-factor three-level experimental method is employed to conduct intuitive analysis and analysis of variance so as to analyze the results for two indicators:fracture stress and fracture strain.Furthermore,the contribution levels of each factor under each analysis method are discussed,and the optimal preparation process is ultimately determined to be a high-temperature curing temperature of 150℃,a high-temperature curing time of 1.5 hours,a low-temperature curing temperature of 60℃,and a low-temperature curing time of 4 days.The optimal preparation conditions are used to observe the microstructure of epoxy asphalt at different curing stages using fluorescence microscopy,providing insight into the microstructure of epoxy asphalt at different curing stages.The curing reaction ultimately result in the formation of a stable phase structure with matrix asphalt as the dispersed phase and epoxy resin as the continuous phase,while maintaining good mechanical properties.
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