为研究天然湖沥青对基质沥青的改性效果,采用特立尼达湖沥青作为改性剂,以国产AH-70#基质沥青为被改性材料,研究掺加湖沥青后的基质沥青的改性效果,通过针入度指数、当量软化点、当量脆点等感温性指标的测试,得出天然湖沥青对基质沥青的高低温性能都有明显改善;综合考虑工程实际、造价等因素,建议湖沥青掺加量为25%。 In order to study the effect of natural lake asphalt on the modification of matrix asphalt, Trinidad lake asphalt was used as modifier and domestic AH-70 # asphalt was used as modified material to study the modification of matrix asphalt after lake asphalt was added The results showed that the natural lake asphalt had a significant improvement on the high and low temperature properties of the matrix asphalt through the penetration index, the equivalent softening point and the equivalent brittleness point. Considering the engineering practice and cost, Proposed asphalt mixing amount of 25%.