Modified asphalt and preparation method thereof

The invention discloses modified asphalt and a preparation method thereof, and relates to the technical field of asphalt processing. The modified asphalt comprises the following raw material components in parts by weight: 60-100 parts of matrix asphalt, 5-10 parts of a modifier, 3-7 parts of an anti-aging agent, 6-12 parts of a dispersant, 0.5-1 part of a stabilizer and 1-3 parts of a high-molecular polymer. The modified asphalt prepared by the method disclosed by the invention has excellent strength, toughness and high and low temperature performance; meanwhile, the method disclosed by the invention can be used for recovering the oil shale ash and reducing the pollution to the environment, so the modified asphalt becomes a valuable product. 本发明公开了一种改性沥青及其制备方法，涉及沥青加工技术领域。所述改性沥青包括以下重量份数的原料组分：基质沥青60-100份、改性剂5-10份、防老剂3-7份、分散剂6-12份、稳定剂0.5-1份、高分子聚合物1-3份；本发明方法制备的改性沥青具备优良的强度、韧性和高低温性能，同时本发明方法能回收油页岩灰，减少对环境的污染，使其成为有价值的产品。