科研之友
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摘要
The recycled packaging waste PE was adopted to modify the asphalt and the UV-aging resistance of the modified asphalt was studied through the UV-aging experiment. The results showed that the changing trends of softening point aging index, penetration aging index, elastic recovery aging index and viscosity aging index at 135 degrees C of the modified and unmodified asphalt are similar. FTIR analysis and the microscopic structure of the asphalt indicated that there existed two kinds of reactions taking place in the aging process of packing waste PE modified asphalt, the oxidation of raw asphalt and the aging of the polymer.
