Effect of Base Asphalt Composition Changes on the Performance of High Viscosity Asphalt
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
万方数据
维普
