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由于国产沥青的性能很差 ,对沥青进行改性成为提高国产沥青性能最重要的手段之一 ,我们选择聚乙烯和废旧橡胶粉对国产胜利 10 0 #沥青进行改性。本文首先根据高分子化学的有关理论分析聚乙烯橡胶改性沥青的机理 ,然后采用韧度试验、滑板剪切试验、低温延度和软化点、薄膜烘箱试验对制得的改性沥青进行了评价 ,证明改性沥青在抗冲击性能、高低温性能、抗老化性能方面较原沥青有明显改善。
Due to the poor performance of domestic asphalt, asphalt modification has become one of the most important means to improve the performance of domestic asphalt, we choose polyethylene and waste rubber powder for domestic victory 10 # asphalt modified. Based on the theory of macromolecule chemistry, the mechanism of polyethylene rubber modified asphalt was first analyzed. Then, the modified asphalt was evaluated by tenacity test, skateboard shear test, low temperature ductility and softening point and thin film oven test , Proves that the modified asphalt has a significant improvement over the original asphalt in impact resistance, high and low temperature performance, anti-aging properties.