How can we make our asphalt mixes better?
More specifically, what steps can be taken to improve durability, rut-resistance and crack resistance.
We look at three basic steps:
• Adjust the gradation to ensure adequate VMA (voids in mineral aggregate) and thus sufficient binder
• Allow for proper air voids in combination with VMA
• Understand and control the impact of RAP (reclaimed asphalt pavement) and RAS (reclaimed asphalt shingles) in our mix