High viscosity asphalt is widely used in drainage asphalt pavement in China,and the changes in the composition of the base asphalt have a significant impact on the preparation and comprehensive applica-tion performance of high viscosity asphalt.In this paper,5 types of matrix asphalt were selected to prepare high viscosity asphalt,and the comprehensive performance of high viscosity asphalt was evaluated using con-ventional performance and rheological properties indicators.As the aromatic content in the matrix asphalt in-creased,the viscosity and segregation of high viscosity asphalt at 135 ℃ gradually decreased,indicating that the aromatic content in the matrix asphalt improved the construction,workability,and storage stability of high viscosity asphalt.In terms of high-temperature performance,the 60℃ rutting factor gradually decreased as the aromatic content in asphalt gradually increased.And there was a good linear correlation between high-temperature performance and the composition of the base asphalt.In terms of low-temperature performance,the changes of aromatic content in base asphalt had not significant improvement on the low-temperature per-formance of the high viscosity asphalt.
high viscosity asphaltasphalt componentsaromaticsconventional indexrheological properties
维普
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