BBR on the antioxidant properties of

And the ability to track high-temperature resistant On the contrary, the reduction of road surface temperature cracks are usually due to the use of asphalt in the process of aging, stiffness modulus increasing, the bitumen into a low-temperature flexibility and gradually fragile result, it reflects the low-temperature anti-cracking performance indicators are used after RTFOT After aging and pressure (P AV) of asphalt, the determination of low-temperature creep bending stiffness modulus (S) as the most important indicators. With bending beam rheometer (BBR) to do simple beam bending test to evaluate the pitch of the heat aging properties of oxygen, and low-temperature fatigue crack resistance, resistance to reflect the focus on cracking temperature shrinkage. Test temperature of-18oC to add a different antioxidant when the SBS modified asphalt and the S value m. Data show that the added antioxidant value of the minimum C of S, followed by the antioxidant B, A and antioxidant not the same antioxidant, and add the antioxidant B of the largest value of m, followed by the antioxidant-free, add a minimum of C antioxidant . On the whole, the B add the antioxidant properties of the optimal long-term comprehensive Anti-aging, antioxidant followed by the C, A antioxidant worst.