Research on the Preparation Process of Special High Viscosity Modified Asphalt
The article selects raw materials for high viscosity modified asphalt and studies the preparation process to prepare special high vis-cosity modified asphalt suitable for permeable asphalt pavement and ultra-thin wear layer.The study found that the special high viscosity modi-fied asphalt prepared by composite modification of SBS and high viscosity agent has better bonding performance and comprehensive perform-ance.Both SBS modifier and high viscosity agent can enhance the high-temperature performance and viscoelasticity of asphalt materials.High viscosity agents can enhance the low-temperature fatigue cracking resistance of asphalt within a certain dosage range,but if it is too high,it will decrease.
Special high viscosity asphaltHigh viscosity agentComposite modificationBond Behavior
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